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Attiny_Solar_Energy_Harvest/docs/17.aux

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+\relax 
+\@writefile{toc}{\contentsline {section}{\numberline {1}Attiny Solar Energy Harvest Tests}{1}}
+\@writefile{toc}{\contentsline {subsection}{\numberline {1.1}Micro Considerations}{1}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.1.1}Micro Notes}{1}}
+\@writefile{toc}{\contentsline {subsection}{\numberline {1.2}Energy Storage}{1}}
+\@writefile{toc}{\contentsline {subsection}{\numberline {1.3}Make parts, not scrap}{2}}
+\@writefile{toc}{\contentsline {subsection}{\numberline {1.4}Programming}{2}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.4.1}Testing Arduino Loader}{2}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.4.2}Conclusion on Arduino Programming Attiny10}{5}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.4.3}IO Port Switching Speed}{5}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.4.4}VCC 1.8V}{5}}
+\@writefile{toc}{\contentsline {subsection}{\numberline {1.5}Application}{6}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.5.1}Magnetic Current Sensor}{7}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.5.2}Accelerometers}{7}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.5.3}Temperature Sensors}{8}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.5.4}Gas Sensors}{8}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.5.5}Supercap}{8}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.5.6}Hall Effect Sensors - Push Pull vs Open Drain Outputs}{8}}

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Attiny_Solar_Energy_Harvest/docs/17.tex

@@ -0,0 +1,253 @@
+
+\documentclass[11pt]{article}
+%Gummi|065|=)
+\usepackage{graphicx}
+\usepackage{caption}
+\usepackage{xcolor}
+\usepackage[vcentering,dvips]{geometry}
+\geometry{papersize={6in,9in},total={4.5in,6.8in}}
+%\title{\textbf{Door Alarm}}
+\author{Steak Electronics}
+\date{}
+\begin{document}
+
+%\maketitle
+
+%\tableofcontents
+\textcolor{green!60!blue!70}{
+  \section{Attiny Solar Energy Harvest Tests}}
+
+I have the following:
+\begin{itemize}
+\item Solar panels
+\item Attiny 10
+\end{itemize}
+To this list, I will add a supercap, and an energy harvesting IC. The goal being to load the super cap during the day, and to run 24/7. I will need an exceptionally low power micro. The super cap will need to be about 3.3V or 5V.
+\textcolor{green!60!blue!70}{
+\subsection{Micro Considerations}}
+The Arduino Atmega328P is not an option. I'm looking to have a current draw of only 1mA max, (ideally 500uA) when active. Moteino is also not an option for this. Those are made for batteries. I want to be battery free. A super cap, however can be used to store energy. I'll get to that shortly.
+
+For micros, I have some Attiny10 on hand, and these have a reasonably low power pull in active mode. Let's build those up first. What will the micro do? No idea. I haven't a clue.
+
+\textcolor{green!60!blue!70}{
+\subsubsection{Micro Notes}}
+Must run at 1.8V / 1MHz per front page of data sheet, for 200uA draw in active mode.
+\\
+\\
+
+
+\textcolor{green!60!blue!70}{
+\subsection{Energy Storage}}
+I don't want a battery. Let's go with a super cap. The solar panels will only be active some of the time, so I will want to harvest energy with some kind of IC into the cap when the sun is out.\footnote{Reference: www.analog.com/media/en/technical-documentation/technical-articles/solarenergyharvesting.pdf is a start. I'll need to do more research.}
+
+\textcolor{green!60!blue!70}{ \subsection{Make parts, not scrap}} I will 
+want to make sure that all parts I build are perf board parts, not 
+breadboard scrap (to be torn down and rebuilt again). This is an Attiny, 
+so no need to test much, yet.
+
+\textcolor{green!60!blue!70}{
+\subsection{Programming}}
+To program the Attiny10, I'll use the Arduino adapter from the Junk + Arduino blog. I built it up\footnote{Had slight error where the Arduino + board wouldn't read - pins too short on headers, then the arduino wouldn't boot - due to bad connection on perf board shield. Thankfully, the USB port didn't try to run. Protection circuitry cut in on the laptop.}, and was able to Read the memory. In order to upload to the board, you will need a compiler setup. You can possibly do it in AVRGCC, but instead I opted for either Arduino IDE (via Attiny10Core which didn't work), and then went to Mplab. In order for mplab 5.25 to work, it will need XC8 compiler, and there is a pack that can be downloaded through the IDE to get Attiny10 support.
+
+It appears the AVR Dragon (which I have) can not be used. However, other programmers can be used. Pickit 4, Mkavrii, stk600, I think.
+
+
+\textcolor{green!60!blue!70}{ \subsubsection{Testing Arduino Loader}}
+Tested this with the blink\_LED.c in code folder. The code is as simple as possible. 
+It is the following:
+\begin{verbatim}
+//#include <xc.h>
+#include <avr/io.h>
+#include <util/delay.h>
+
+int main(void)
+{
+    // PB2 output
+    DDRB = 1<<2;
+
+    while(1)
+    {
+        // Toggle PB2
+        PINB = 1<<2;
+        _delay_ms(500);
+    }
+}
+\end{verbatim}
+When programmed in Mplab, with XC8 compiler, and Attiny10 support, I get the following
+hex output:
+\begin{verbatim}
+:100000000AC020C01FC01EC01DC01CC01BC01AC01B
+:1000100019C018C017C011271FBFCFE5D0E0DEBF41
+:0A002000CDBF03D000C0F894FFCF5D
+:10002A0044E041B940B95FE966E871E05150604087
+:0A003A007040E1F700C00000F5CFB0
+:02004400DDCF0E
+:00000001FF
+\end{verbatim}
+The content of this hex isn't the focus of this passage. Instead, I want you to review the 
+results of a D for Dump Memory, by the Arduino Loader.
+\begin{verbatim}
+
+Current memory state:
+
+registers, SRAM
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+0000: 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0030: 00 00 00 00 00 00 03 00 00 79 00 03 00 00 00 00 
+0040: B7 AD AE FA 58 70 63 6B FB 5A B4 1B FF FF 35 3F 
+0050: 67 D7 33 43 DF 5F FB 72 C9 7D FE E9 9D C5 00 12 
+NVM lock
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F00: FF FF 
+configuration
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F40: FF FF 
+calibration
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F80: 79 FF 
+device ID
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3FC0: 1E 90 03 FF 
+program
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+4000: 0A C0 20 C0 1F C0 1E C0 1D C0 1C C0 1B C0 1A C0 
+4010: 19 C0 18 C0 17 C0 11 27 1F BF CF E5 D0 E0 DE BF 
+4020: CD BF 03 D0 00 C0 F8 94 FF CF 44 E0 41 B9 40 B9 
+4030: 5F E9 66 E8 71 E0 51 50 60 40 70 40 E1 F7 00 C0 
+4040: 00 00 F5 CF DD CF FF FF FF FF FF FF FF FF FF FF 
+4050: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+4060: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+(...some memory omitted here for brevity...)
+43E0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+43F0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
+\end{verbatim}
+
+Notice that the "AC020C01F" is set. That is from the hex. But the 01000...
+before it seems to be missing. Some deciphering of how the Arduino programs
+the Attiny is in order here. It also doesn't end the same.
+
+Regardless, when programming, the Arduino reports 70 bytes written, and
+likewise in the Mplab project memorymap.xml file, it also notes 70 bytes
+for the sketch. This lines up.\footnote{Although for an unknown reason, every command registers twice on the Arduino serial monitor, but this appears to be harmless.}
+
+The blinking LED works. Let's move on.
+
+\textcolor{green!60!blue!70}{\subsubsection{Conclusion on Arduino Programming Attiny10}}
+It's possible, but you have to make a dedicated jig (almost), so it might be easier to use the official programming tools. However, based on this https://www.avrfreaks.net/forum/pickit-4-and-avr-mcu I might not have a choice. So I will use the Arduino for now. But will have to devise what on board parts are req'd for programming, and incorporate into proto board layout.
+
+\textcolor{green!60!blue!70}{ \subsubsection{IO Port Switching Speed}}
+Using the above code without any delay\_ms, I get the following results from a default clock
+speed, and a 128KHz clock speed. This test was done to confirm that I could change the clock with
+\begin{verbatim}
+    //Write CCP
+    CCP = 0xD8;
+    //change CLK to 128KHz
+    CLKMSR = 0b01;
+\end{verbatim}
+There was no issue.
+\begin{verbatim}
+Default CLK (8MHz? or 1MHz?): 160KHz IO Switch
+128KHz CLK: 2.5KHz IO Switch
+\end{verbatim}
+I am going to pursue 128KHz for starters, for lower current dissipation. Note that with the Arduino loader, it is cumbersome to test and change code as you move along. It is
+therefore going to be necessary to use a programmer, with a dedicated header on board.
+\textcolor{green!60!blue!70}{ \subsubsection{VCC 1.8V}}
+The lowest power supported: 1.8V can be applied, without any configuration
+needed. It does not affect IO switching speed (although obviously amplitude is affected).
+\begin{verbatim}
+128KHz CLK (5.0V): 2.5256  KHz IO switch
+128KHz CLK (3.3V): 2.5477  KHz IO switch
+128KHz CLK (1.8V): 2.5849  KHz IO switch
+\end{verbatim}
+As voltage drops, IO increases.
+\\
+\\
+\textbf{VCC Dropout voltage:}
+\\
+From 1.5, it drops out at 1.248V or so. Comes back at about 1.34V
+\\
+\\
+Test size of 1.
+\\
+\\
+Can't run this with one (AA) battery, but you could with 2.
+\\
+\\
+Current Draw: 128KHz - IO test, 1.8V, 0.08mA (~78uA) (tested w/3478A)
+\\
+\\
+\textcolor{green!60!blue!70}{\subsection{Application}}
+First, I need a board for these and a programmer, to quickly program. Second, I need an application. I want extremely low power. Hopefully, solar with no batteries, to start. This is extremely low - that is the point. Let's keep this ridiculous.
+
+Given the power requirements put me under 1mA (with my current panels), I'm considering the following: EEPROMs would require SPI protocol. Doable, but overcomplicated for now.
+\\
+\\
+Eink (need to find a small and cheap enough option. So far, they have either too many pins, and/or use too much current. Something like what stores use to display prices would work, but that doesn't get the data out, only makes it readable.),
+\\
+\\
+Third option would be RF. That is a viable path, but not today. Let's skip that for now.
+\\
+\\
+Fourth option that comes to mind is IR. IR diodes, as in TV remotes, would work well here. I am choosing this as the first project. I will have dumb clients, that consist of - Attiny / IR / Sensor powered by solar. I will have a BBB that receives the IR data, and does all intelligent data gathering. To keep things simple, the IR will be binary ADC data, or otherwise sensor numbers. No SPI, no protocol complexity. That would require space on the Attiny.
+\\
+\\
+Let's build some boards based on the above.
+\\
+\\
+For sensors:
+While building, I came across an option. Hall effect sensors. I think also capacitive sensors can be used. This may find a use in a gate sensor, for when a driveway gate is opened or closed. With a small battery, it would work for years.
+
+Footprints: I had to make a footprint for this module on board package for one sensor. The solution to get footprints right? copy graphic image and make it into silkscreen on the board. Easy.
+
+The sensor I looked at was a temp and humidity sensor SHT11 (SHT10 is obsolete). It is low power enough. However, it's \$20. So not in my price range. Otherwise, it would work here. Looks like communication is a shift register, or SPI.
+
+\subsubsection{Magnetic Current Sensor}
+There is this:
+BM14270AMUV-LB
+Which is low enough current here (<1mA). But \$7 in qty, and req's I2C. Not today.
+
+\subsubsection{Accelerometers}
+These are an option.
+
+Best pinout (for deadbug) is LIS344ALHTR (but lacks vcc down to 1.8)
+2nd Best pinout with full 1.8 -3.6 vcc is ADXL337BCPZ-RL7
+(Keep in mind, these are low end options only)
+(Analog output only. keep it simple for now.)
+Runner up to all above, is KXTC9-2050-FR . But has worse pinout.
+
+Going with AD part. \$5 in single qty.
+Digital output Accelmeters are cheaper.
+
+All have tiny package sizes.
+
+Since I am grabbing 1 output only, will need to orient or choose correct output.
+
+\subsubsection{Temperature Sensors}
+Temperature can be boring, but why not. Let's throw one of these on:	LMT84LP . Pin compatible with LM35. Supply current is maybe 8uA. Extremely low.
+LM84 (1.5V starts, to 5.5), LM85 (1.8V to 5.5)
+
+\subsubsection{Gas Sensors}
+Lowest is 5mV as of writing on dkey. Skipping.
+
+\subsubsection{Supercap}
+For now, trying this:
+FG0V155ZF 
+
+
+
+
+
+
+
+
+
+
+
+\subsubsection{Hall Effect Sensors - Push Pull vs Open Drain Outputs}
+\begin{verbatim}9.1.1OutputTypeTradeoffsThe push-pulloutputallowsfor the lowestsystempowerconsumptionbecausethereis no currentleakagepathwhenthe outputdriveshighor low. The open-drainoutputinvolvesa leakagepaththroughthe externalpullupresistorwhenthe outputdriveslow.The open-drainoutputsof multipledevicescan be tied togetherto forma logicalAND.In this setup,if any sensordriveslow, the voltageon the sharednodebecomeslow. Thiscan allowa singleGPIOto measurean arrayofsensors \end{verbatim} From DRV5032 data sheet.
+
+
+\end{document}
+

Attiny_Solar_Energy_Harvest/docs/17.tex~

@@ -0,0 +1,211 @@
+
+\documentclass[11pt]{article}
+%Gummi|065|=)
+\usepackage{graphicx}
+\usepackage{caption}
+\usepackage{xcolor}
+\usepackage[vcentering,dvips]{geometry}
+\geometry{papersize={6in,9in},total={4.5in,6.8in}}
+%\title{\textbf{Door Alarm}}
+\author{Steak Electronics}
+\date{}
+\begin{document}
+
+%\maketitle
+
+%\tableofcontents
+\textcolor{green!60!blue!70}{
+  \section{Attiny Solar Energy Harvest Tests}}
+
+I have the following:
+\begin{itemize}
+\item Solar panels
+\item Attiny 10
+\end{itemize}
+To this list, I will add a supercap, and an energy harvesting IC. The goal being to load the super cap during the day, and to run 24/7. I will need an exceptionally low power micro. The super cap will need to be about 3.3V or 5V.
+\textcolor{green!60!blue!70}{
+\subsection{Micro Considerations}}
+The Arduino Atmega328P is not an option. I'm looking to have a current draw of only 1mA max, (ideally 500uA) when active. Moteino is also not an option for this. Those are made for batteries. I want to be battery free. A super cap, however can be used to store energy. I'll get to that shortly.
+
+For micros, I have some Attiny10 on hand, and these have a reasonably low power pull in active mode. Let's build those up first. What will the micro do? No idea. I haven't a clue.
+
+\textcolor{green!60!blue!70}{
+\subsubsection{Micro Notes}}
+Must run at 1.8V / 1MHz per front page of data sheet, for 200uA draw in active mode.
+\\
+\\
+
+
+\textcolor{green!60!blue!70}{
+\subsection{Energy Storage}}
+I don't want a battery. Let's go with a super cap. The solar panels will only be active some of the time, so I will want to harvest energy with some kind of IC into the cap when the sun is out.\footnote{Reference: www.analog.com/media/en/technical-documentation/technical-articles/solarenergyharvesting.pdf is a start. I'll need to do more research.}
+
+\textcolor{green!60!blue!70}{ \subsection{Make parts, not scrap}} I will 
+want to make sure that all parts I build are perf board parts, not 
+breadboard scrap (to be torn down and rebuilt again). This is an Attiny, 
+so no need to test much, yet.
+
+\textcolor{green!60!blue!70}{
+\subsection{Programming}}
+To program the Attiny10, I'll use the Arduino adapter from the Junk + Arduino blog. I built it up\footnote{Had slight error where the Arduino + board wouldn't read - pins too short on headers, then the arduino wouldn't boot - due to bad connection on perf board shield. Thankfully, the USB port didn't try to run. Protection circuitry cut in on the laptop.}, and was able to Read the memory. In order to upload to the board, you will need a compiler setup. You can possibly do it in AVRGCC, but instead I opted for either Arduino IDE (via Attiny10Core which didn't work), and then went to Mplab. In order for mplab 5.25 to work, it will need XC8 compiler, and there is a pack that can be downloaded through the IDE to get Attiny10 support.
+
+It appears the AVR Dragon (which I have) can not be used. However, other programmers can be used. Pickit 4, Mkavrii, stk600, I think.
+
+
+\textcolor{green!60!blue!70}{ \subsubsection{Testing Arduino Loader}}
+Tested this with the blink\_LED.c in code folder. The code is as simple as possible. 
+It is the following:
+\begin{verbatim}
+//#include <xc.h>
+#include <avr/io.h>
+#include <util/delay.h>
+
+int main(void)
+{
+    // PB2 output
+    DDRB = 1<<2;
+
+    while(1)
+    {
+        // Toggle PB2
+        PINB = 1<<2;
+        _delay_ms(500);
+    }
+}
+\end{verbatim}
+When programmed in Mplab, with XC8 compiler, and Attiny10 support, I get the following
+hex output:
+\begin{verbatim}
+:100000000AC020C01FC01EC01DC01CC01BC01AC01B
+:1000100019C018C017C011271FBFCFE5D0E0DEBF41
+:0A002000CDBF03D000C0F894FFCF5D
+:10002A0044E041B940B95FE966E871E05150604087
+:0A003A007040E1F700C00000F5CFB0
+:02004400DDCF0E
+:00000001FF
+\end{verbatim}
+The content of this hex isn't the focus of this passage. Instead, I want you to review the 
+results of a D for Dump Memory, by the Arduino Loader.
+\begin{verbatim}
+
+Current memory state:
+
+registers, SRAM
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+0000: 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0030: 00 00 00 00 00 00 03 00 00 79 00 03 00 00 00 00 
+0040: B7 AD AE FA 58 70 63 6B FB 5A B4 1B FF FF 35 3F 
+0050: 67 D7 33 43 DF 5F FB 72 C9 7D FE E9 9D C5 00 12 
+NVM lock
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F00: FF FF 
+configuration
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F40: FF FF 
+calibration
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F80: 79 FF 
+device ID
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3FC0: 1E 90 03 FF 
+program
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+4000: 0A C0 20 C0 1F C0 1E C0 1D C0 1C C0 1B C0 1A C0 
+4010: 19 C0 18 C0 17 C0 11 27 1F BF CF E5 D0 E0 DE BF 
+4020: CD BF 03 D0 00 C0 F8 94 FF CF 44 E0 41 B9 40 B9 
+4030: 5F E9 66 E8 71 E0 51 50 60 40 70 40 E1 F7 00 C0 
+4040: 00 00 F5 CF DD CF FF FF FF FF FF FF FF FF FF FF 
+4050: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+4060: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+(...some memory omitted here for brevity...)
+43E0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+43F0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
+\end{verbatim}
+
+Notice that the "AC020C01F" is set. That is from the hex. But the 01000...
+before it seems to be missing. Some deciphering of how the Arduino programs
+the Attiny is in order here. It also doesn't end the same.
+
+Regardless, when programming, the Arduino reports 70 bytes written, and
+likewise in the Mplab project memorymap.xml file, it also notes 70 bytes
+for the sketch. This lines up.\footnote{Although for an unknown reason, every command registers twice on the Arduino serial monitor, but this appears to be harmless.}
+
+The blinking LED works. Let's move on.
+
+\textcolor{green!60!blue!70}{\subsubsection{Conclusion on Arduino Programming Attiny10}}
+It's possible, but you have to make a dedicated jig (almost), so it might be easier to use the official programming tools. However, based on this https://www.avrfreaks.net/forum/pickit-4-and-avr-mcu I might not have a choice. So I will use the Arduino for now. But will have to devise what on board parts are req'd for programming, and incorporate into proto board layout.
+
+\textcolor{green!60!blue!70}{ \subsubsection{IO Port Switching Speed}}
+Using the above code without any delay\_ms, I get the following results from a default clock
+speed, and a 128KHz clock speed. This test was done to confirm that I could change the clock with
+\begin{verbatim}
+    //Write CCP
+    CCP = 0xD8;
+    //change CLK to 128KHz
+    CLKMSR = 0b01;
+\end{verbatim}
+There was no issue.
+\begin{verbatim}
+Default CLK (8MHz? or 1MHz?): 160KHz IO Switch
+128KHz CLK: 2.5KHz IO Switch
+\end{verbatim}
+I am going to pursue 128KHz for starters, for lower current dissipation. Note that with the Arduino loader, it is cumbersome to test and change code as you move along. It is
+therefore going to be necessary to use a programmer, with a dedicated header on board.
+\textcolor{green!60!blue!70}{ \subsubsection{VCC 1.8V}}
+The lowest power supported: 1.8V can be applied, without any configuration
+needed. It does not affect IO switching speed (although obviously amplitude is affected).
+\begin{verbatim}
+128KHz CLK (5.0V): 2.5256  KHz IO switch
+128KHz CLK (3.3V): 2.5477  KHz IO switch
+128KHz CLK (1.8V): 2.5849  KHz IO switch
+\end{verbatim}
+As voltage drops, IO increases.
+\\
+\\
+\textbf{VCC Dropout voltage:}
+\\
+From 1.5, it drops out at 1.248V or so. Comes back at about 1.34V
+\\
+\\
+Test size of 1.
+\\
+\\
+Can't run this with one (AA) battery, but you could with 2.
+\\
+\\
+Current Draw: 128KHz - IO test, 1.8V, 0.08mA (~78uA) (tested w/3478A)
+\\
+\\
+\textcolor{green!60!blue!70}{\subsection{Application}}
+First, I need a board for these and a programmer, to quickly program. Second, I need an application. I want extremely low power. Hopefully, solar with no batteries, to start. This is extremely low - that is the point.
+
+Given the power requirements put me under 1mA (with my current panels), I'm considering the following: EEPROMs would require SPI protocol. Doable, but overcomplicated for now.
+\\
+\\
+Eink (need to find a small and cheap enough option. So far, they have either too many pins, and/or use too much current. Something like what stores use to display prices would work, but that doesn't get the data out, only makes it readable.),
+\\
+\\
+Third option would be RF. That is a viable path, but not today. Let's skip that for now.
+\\
+\\
+Fourth option that comes to mind is IR. IR diodes, as in TV remotes, would work well here. I am choosing this as the first project. I will have dumb clients, that consist of - Attiny / IR / Sensor powered by solar. I will have a BBB that receives the IR data, and does all intelligent data gathering. To keep things simple, the IR will be binary ADC data, or otherwise sensor numbers. No SPI, no protocol complexity. That would require space on the Attiny.
+\\
+\\
+Let's build some boards based on the above.
+\\
+\\
+For sensors:
+While building, I came across an option. Hall effect sensors. I think also capacitive sensors can be used. This may find a use in a gate sensor, for when a driveway gate is opened or closed. With a small battery, it would work for years.
+
+Footprints: I had to make a footprint for this module on board package for one sensor. The solution to get footprints right? copy graphic image and make it into silkscreen on the board. Easy.
+
+
+
+\subsubsection{Hall Effect Sensors}
+\begin{verbatim}9.1.1OutputTypeTradeoffsThe push-pulloutputallowsfor the lowestsystempowerconsumptionbecausethereis no currentleakagepathwhenthe outputdriveshighor low. The open-drainoutputinvolvesa leakagepaththroughthe externalpullupresistorwhenthe outputdriveslow.The open-drainoutputsof multipledevicescan be tied togetherto forma logicalAND.In this setup,if any sensordriveslow, the voltageon the sharednodebecomeslow. Thiscan allowa singleGPIOto measurean arrayofsensors \end{verbatim}
+
+
+\end{document}
+

Attiny_Solar_Energy_Harvest/docs/18.aux

@@ -0,0 +1,19 @@
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+\@writefile{toc}{\contentsline {section}{\numberline {1}Attiny Solar Energy Harvest Tests}{1}}
+\@writefile{toc}{\contentsline {subsection}{\numberline {1.1}Micro Considerations}{1}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.1.1}Micro Notes}{1}}
+\@writefile{toc}{\contentsline {subsection}{\numberline {1.2}Energy Storage}{1}}
+\@writefile{toc}{\contentsline {subsection}{\numberline {1.3}Make parts, not scrap}{2}}
+\@writefile{toc}{\contentsline {subsection}{\numberline {1.4}Programming}{2}}
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+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.4.2}Conclusion on Arduino Programming Attiny10}{5}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.4.3}IO Port Switching Speed}{5}}
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+\@writefile{toc}{\contentsline {subsection}{\numberline {1.5}Application}{6}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.5.1}Magnetic Current Sensor}{7}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.5.2}Accelerometers}{7}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.5.3}Temperature Sensors}{8}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.5.4}Gas Sensors}{8}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.5.5}Supercap}{8}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.5.6}Hall Effect Sensors - Push Pull vs Open Drain Outputs}{8}}
+\@writefile{toc}{\contentsline {subsection}{\numberline {1.6}Starting Sensors}{8}}

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Attiny_Solar_Energy_Harvest/docs/18.tex

@@ -0,0 +1,270 @@
+
+\documentclass[11pt]{article}
+%Gummi|065|=)
+\usepackage{graphicx}
+\usepackage{caption}
+\usepackage{xcolor}
+\usepackage[vcentering,dvips]{geometry}
+\geometry{papersize={6in,9in},total={4.5in,6.8in}}
+%\title{\textbf{Door Alarm}}
+\author{Steak Electronics}
+\date{}
+\begin{document}
+
+%\maketitle
+
+%\tableofcontents
+\textcolor{green!60!blue!70}{
+  \section{Attiny Solar Energy Harvest Tests}}
+
+I have the following:
+\begin{itemize}
+\item Solar panels
+\item Attiny 10
+\end{itemize}
+To this list, I will add a supercap, and an energy harvesting IC. The goal being to load the super cap during the day, and to run 24/7. I will need an exceptionally low power micro. The super cap will need to be about 3.3V or 5V.
+\textcolor{green!60!blue!70}{
+\subsection{Micro Considerations}}
+The Arduino Atmega328P is not an option. I'm looking to have a current draw of only 1mA max, (ideally 500uA) when active. Moteino is also not an option for this. Those are made for batteries. I want to be battery free. A super cap, however can be used to store energy. I'll get to that shortly.
+
+For micros, I have some Attiny10 on hand, and these have a reasonably low power pull in active mode. Let's build those up first. What will the micro do? No idea. I haven't a clue.
+
+\textcolor{green!60!blue!70}{
+\subsubsection{Micro Notes}}
+Must run at 1.8V / 1MHz per front page of data sheet, for 200uA draw in active mode.
+\\
+\\
+
+
+\textcolor{green!60!blue!70}{
+\subsection{Energy Storage}}
+I don't want a battery. Let's go with a super cap. The solar panels will only be active some of the time, so I will want to harvest energy with some kind of IC into the cap when the sun is out.\footnote{Reference: www.analog.com/media/en/technical-documentation/technical-articles/solarenergyharvesting.pdf is a start. I'll need to do more research.}
+
+\textcolor{green!60!blue!70}{ \subsection{Make parts, not scrap}} I will 
+want to make sure that all parts I build are perf board parts, not 
+breadboard scrap (to be torn down and rebuilt again). This is an Attiny, 
+so no need to test much, yet.
+
+\textcolor{green!60!blue!70}{
+\subsection{Programming}}
+To program the Attiny10, I'll use the Arduino adapter from the Junk + Arduino blog. I built it up\footnote{Had slight error where the Arduino + board wouldn't read - pins too short on headers, then the arduino wouldn't boot - due to bad connection on perf board shield. Thankfully, the USB port didn't try to run. Protection circuitry cut in on the laptop.}, and was able to Read the memory. In order to upload to the board, you will need a compiler setup. You can possibly do it in AVRGCC, but instead I opted for either Arduino IDE (via Attiny10Core which didn't work), and then went to Mplab. In order for mplab 5.25 to work, it will need XC8 compiler, and there is a pack that can be downloaded through the IDE to get Attiny10 support.
+
+It appears the AVR Dragon (which I have) can not be used. However, other programmers can be used. Pickit 4, Mkavrii, stk600, I think.
+
+
+\textcolor{green!60!blue!70}{ \subsubsection{Testing Arduino Loader}}
+Tested this with the blink\_LED.c in code folder. The code is as simple as possible. 
+It is the following:
+\begin{verbatim}
+//#include <xc.h>
+#include <avr/io.h>
+#include <util/delay.h>
+
+int main(void)
+{
+    // PB2 output
+    DDRB = 1<<2;
+
+    while(1)
+    {
+        // Toggle PB2
+        PINB = 1<<2;
+        _delay_ms(500);
+    }
+}
+\end{verbatim}
+When programmed in Mplab, with XC8 compiler, and Attiny10 support, I get the following
+hex output:
+\begin{verbatim}
+:100000000AC020C01FC01EC01DC01CC01BC01AC01B
+:1000100019C018C017C011271FBFCFE5D0E0DEBF41
+:0A002000CDBF03D000C0F894FFCF5D
+:10002A0044E041B940B95FE966E871E05150604087
+:0A003A007040E1F700C00000F5CFB0
+:02004400DDCF0E
+:00000001FF
+\end{verbatim}
+The content of this hex isn't the focus of this passage. Instead, I want you to review the 
+results of a D for Dump Memory, by the Arduino Loader.
+\begin{verbatim}
+
+Current memory state:
+
+registers, SRAM
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+0000: 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0030: 00 00 00 00 00 00 03 00 00 79 00 03 00 00 00 00 
+0040: B7 AD AE FA 58 70 63 6B FB 5A B4 1B FF FF 35 3F 
+0050: 67 D7 33 43 DF 5F FB 72 C9 7D FE E9 9D C5 00 12 
+NVM lock
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F00: FF FF 
+configuration
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F40: FF FF 
+calibration
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F80: 79 FF 
+device ID
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3FC0: 1E 90 03 FF 
+program
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+4000: 0A C0 20 C0 1F C0 1E C0 1D C0 1C C0 1B C0 1A C0 
+4010: 19 C0 18 C0 17 C0 11 27 1F BF CF E5 D0 E0 DE BF 
+4020: CD BF 03 D0 00 C0 F8 94 FF CF 44 E0 41 B9 40 B9 
+4030: 5F E9 66 E8 71 E0 51 50 60 40 70 40 E1 F7 00 C0 
+4040: 00 00 F5 CF DD CF FF FF FF FF FF FF FF FF FF FF 
+4050: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+4060: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+(...some memory omitted here for brevity...)
+43E0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+43F0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
+\end{verbatim}
+
+Notice that the "AC020C01F" is set. That is from the hex. But the 01000...
+before it seems to be missing. Some deciphering of how the Arduino programs
+the Attiny is in order here. It also doesn't end the same.
+
+Regardless, when programming, the Arduino reports 70 bytes written, and
+likewise in the Mplab project memorymap.xml file, it also notes 70 bytes
+for the sketch. This lines up.\footnote{Although for an unknown reason, every command registers twice on the Arduino serial monitor, but this appears to be harmless.}
+
+The blinking LED works. Let's move on.
+
+\textcolor{green!60!blue!70}{\subsubsection{Conclusion on Arduino Programming Attiny10}}
+It's possible, but you have to make a dedicated jig (almost), so it might be easier to use the official programming tools. However, based on this https://www.avrfreaks.net/forum/pickit-4-and-avr-mcu I might not have a choice. So I will use the Arduino for now. But will have to devise what on board parts are req'd for programming, and incorporate into proto board layout.
+
+\textcolor{green!60!blue!70}{ \subsubsection{IO Port Switching Speed}}
+Using the above code without any delay\_ms, I get the following results from a default clock
+speed, and a 128KHz clock speed. This test was done to confirm that I could change the clock with
+\begin{verbatim}
+    //Write CCP
+    CCP = 0xD8;
+    //change CLK to 128KHz
+    CLKMSR = 0b01;
+\end{verbatim}
+There was no issue.
+\begin{verbatim}
+Default CLK (8MHz? or 1MHz?): 160KHz IO Switch
+128KHz CLK: 2.5KHz IO Switch
+\end{verbatim}
+I am going to pursue 128KHz for starters, for lower current dissipation. Note that with the Arduino loader, it is cumbersome to test and change code as you move along. It is
+therefore going to be necessary to use a programmer, with a dedicated header on board.
+\textcolor{green!60!blue!70}{ \subsubsection{VCC 1.8V}}
+The lowest power supported: 1.8V can be applied, without any configuration
+needed. It does not affect IO switching speed (although obviously amplitude is affected).
+\begin{verbatim}
+128KHz CLK (5.0V): 2.5256  KHz IO switch
+128KHz CLK (3.3V): 2.5477  KHz IO switch
+128KHz CLK (1.8V): 2.5849  KHz IO switch
+\end{verbatim}
+As voltage drops, IO increases.
+\\
+\\
+\textbf{VCC Dropout voltage:}
+\\
+From 1.5, it drops out at 1.248V or so. Comes back at about 1.34V
+\\
+\\
+Test size of 1.
+\\
+\\
+Can't run this with one (AA) battery, but you could with 2.
+\\
+\\
+Current Draw: 128KHz - IO test, 1.8V, 0.08mA (~78uA) (tested w/3478A)
+\\
+\\
+\textcolor{green!60!blue!70}{\subsection{Application}}
+First, I need a board for these and a programmer, to quickly program. Second, I need an application. I want extremely low power. Hopefully, solar with no batteries, to start. This is extremely low - that is the point. Let's keep this ridiculous.
+
+Given the power requirements put me under 1mA (with my current panels), I'm considering the following: EEPROMs would require SPI protocol. Doable, but overcomplicated for now.
+\\
+\\
+Eink (need to find a small and cheap enough option. So far, they have either too many pins, and/or use too much current. Something like what stores use to display prices would work, but that doesn't get the data out, only makes it readable.),
+\\
+\\
+Third option would be RF. That is a viable path, but not today. Let's skip that for now.
+\\
+\\
+Fourth option that comes to mind is IR. IR diodes, as in TV remotes, would work well here. I am choosing this as the first project. I will have dumb clients, that consist of - Attiny / IR / Sensor powered by solar. I will have a BBB that receives the IR data, and does all intelligent data gathering. To keep things simple, the IR will be binary ADC data, or otherwise sensor numbers. No SPI, no protocol complexity. That would require space on the Attiny.
+\\
+\\
+Let's build some boards based on the above.
+\\
+\\
+For sensors:
+While building, I came across an option. Hall effect sensors. I think also capacitive sensors can be used. This may find a use in a gate sensor, for when a driveway gate is opened or closed. With a small battery, it would work for years.
+
+Footprints: I had to make a footprint for this module on board package for one sensor. The solution to get footprints right? copy graphic image and make it into silkscreen on the board. Easy.
+
+The sensor I looked at was a temp and humidity sensor SHT11 (SHT10 is obsolete). It is low power enough. However, it's \$20. So not in my price range. Otherwise, it would work here. Looks like communication is a shift register, or SPI.
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Magnetic Current Sensor}}
+There is this:
+BM14270AMUV-LB
+Which is low enough current here (<1mA). But \$7 in qty, and req's I2C. Not today.
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Accelerometers}}
+These are an option.
+
+Best pinout (for deadbug) is LIS344ALHTR (but lacks vcc down to 1.8)
+2nd Best pinout with full 1.8 -3.6 vcc is ADXL337BCPZ-RL7
+(Keep in mind, these are low end options only)
+(Analog output only. keep it simple for now.)
+Runner up to all above, is KXTC9-2050-FR . But has worse pinout.
+
+Going with AD part. \$5 in single qty.
+Digital output Accelmeters are cheaper.
+
+All have tiny package sizes.
+
+Since I am grabbing 1 output only, will need to orient or choose correct output.
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Temperature Sensors}}
+Temperature can be boring, but why not. Let's throw one of these on:	LMT84LP . Pin compatible with LM35. Supply current is maybe 8uA. Extremely low.
+LM84 (1.5V starts, to 5.5), LM85 (1.8V to 5.5)
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Gas Sensors}}
+Lowest is 5mV as of writing on dkey. Skipping. The SHT would work, but its too expensive.
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Supercap}}
+For now, trying this:
+FG0V155ZF 
+
+
+
+
+
+
+
+
+
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Hall Effect Sensors - Push Pull vs Open Drain Outputs}}
+\begin{verbatim}9.1.1OutputTypeTradeoffsThe push-pulloutputallowsfor the lowestsystempowerconsumptionbecausethereis no currentleakagepathwhenthe outputdriveshighor low. The open-drainoutputinvolvesa leakagepaththroughthe externalpullupresistorwhenthe outputdriveslow.The open-drainoutputsof multipledevicescan be tied togetherto forma logicalAND.In this setup,if any sensordriveslow, the voltageon the sharednodebecomeslow. Thiscan allowa singleGPIOto measurean arrayofsensors
+\end{verbatim} From DRV5032 data sheet.
+
+\textcolor{green!60!blue!70}{ 
+\subsection{Starting Sensors}}
+So as a recap, to start with affordable, low power sensors for my project, I have the following types:
+\begin{itemize}
+\item Temp sensor (cheapest)
+\item Magnetic Sensor (hall effect) 
+\item Movement Sensor (accellerometer) (analog output) (tiny package) 
+\item capacitive sensor (azoteq)(may only be short range)
+\end{itemize}
+
+And then output is currently IR via diode. Future output would be RF.
+
+\end{document}
+

Attiny_Solar_Energy_Harvest/docs/18.tex~

@@ -0,0 +1,256 @@
+
+\documentclass[11pt]{article}
+%Gummi|065|=)
+\usepackage{graphicx}
+\usepackage{caption}
+\usepackage{xcolor}
+\usepackage[vcentering,dvips]{geometry}
+\geometry{papersize={6in,9in},total={4.5in,6.8in}}
+%\title{\textbf{Door Alarm}}
+\author{Steak Electronics}
+\date{}
+\begin{document}
+
+%\maketitle
+
+%\tableofcontents
+\textcolor{green!60!blue!70}{
+  \section{Attiny Solar Energy Harvest Tests}}
+
+I have the following:
+\begin{itemize}
+\item Solar panels
+\item Attiny 10
+\end{itemize}
+To this list, I will add a supercap, and an energy harvesting IC. The goal being to load the super cap during the day, and to run 24/7. I will need an exceptionally low power micro. The super cap will need to be about 3.3V or 5V.
+\textcolor{green!60!blue!70}{
+\subsection{Micro Considerations}}
+The Arduino Atmega328P is not an option. I'm looking to have a current draw of only 1mA max, (ideally 500uA) when active. Moteino is also not an option for this. Those are made for batteries. I want to be battery free. A super cap, however can be used to store energy. I'll get to that shortly.
+
+For micros, I have some Attiny10 on hand, and these have a reasonably low power pull in active mode. Let's build those up first. What will the micro do? No idea. I haven't a clue.
+
+\textcolor{green!60!blue!70}{
+\subsubsection{Micro Notes}}
+Must run at 1.8V / 1MHz per front page of data sheet, for 200uA draw in active mode.
+\\
+\\
+
+
+\textcolor{green!60!blue!70}{
+\subsection{Energy Storage}}
+I don't want a battery. Let's go with a super cap. The solar panels will only be active some of the time, so I will want to harvest energy with some kind of IC into the cap when the sun is out.\footnote{Reference: www.analog.com/media/en/technical-documentation/technical-articles/solarenergyharvesting.pdf is a start. I'll need to do more research.}
+
+\textcolor{green!60!blue!70}{ \subsection{Make parts, not scrap}} I will 
+want to make sure that all parts I build are perf board parts, not 
+breadboard scrap (to be torn down and rebuilt again). This is an Attiny, 
+so no need to test much, yet.
+
+\textcolor{green!60!blue!70}{
+\subsection{Programming}}
+To program the Attiny10, I'll use the Arduino adapter from the Junk + Arduino blog. I built it up\footnote{Had slight error where the Arduino + board wouldn't read - pins too short on headers, then the arduino wouldn't boot - due to bad connection on perf board shield. Thankfully, the USB port didn't try to run. Protection circuitry cut in on the laptop.}, and was able to Read the memory. In order to upload to the board, you will need a compiler setup. You can possibly do it in AVRGCC, but instead I opted for either Arduino IDE (via Attiny10Core which didn't work), and then went to Mplab. In order for mplab 5.25 to work, it will need XC8 compiler, and there is a pack that can be downloaded through the IDE to get Attiny10 support.
+
+It appears the AVR Dragon (which I have) can not be used. However, other programmers can be used. Pickit 4, Mkavrii, stk600, I think.
+
+
+\textcolor{green!60!blue!70}{ \subsubsection{Testing Arduino Loader}}
+Tested this with the blink\_LED.c in code folder. The code is as simple as possible. 
+It is the following:
+\begin{verbatim}
+//#include <xc.h>
+#include <avr/io.h>
+#include <util/delay.h>
+
+int main(void)
+{
+    // PB2 output
+    DDRB = 1<<2;
+
+    while(1)
+    {
+        // Toggle PB2
+        PINB = 1<<2;
+        _delay_ms(500);
+    }
+}
+\end{verbatim}
+When programmed in Mplab, with XC8 compiler, and Attiny10 support, I get the following
+hex output:
+\begin{verbatim}
+:100000000AC020C01FC01EC01DC01CC01BC01AC01B
+:1000100019C018C017C011271FBFCFE5D0E0DEBF41
+:0A002000CDBF03D000C0F894FFCF5D
+:10002A0044E041B940B95FE966E871E05150604087
+:0A003A007040E1F700C00000F5CFB0
+:02004400DDCF0E
+:00000001FF
+\end{verbatim}
+The content of this hex isn't the focus of this passage. Instead, I want you to review the 
+results of a D for Dump Memory, by the Arduino Loader.
+\begin{verbatim}
+
+Current memory state:
+
+registers, SRAM
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+0000: 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0030: 00 00 00 00 00 00 03 00 00 79 00 03 00 00 00 00 
+0040: B7 AD AE FA 58 70 63 6B FB 5A B4 1B FF FF 35 3F 
+0050: 67 D7 33 43 DF 5F FB 72 C9 7D FE E9 9D C5 00 12 
+NVM lock
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F00: FF FF 
+configuration
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F40: FF FF 
+calibration
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F80: 79 FF 
+device ID
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3FC0: 1E 90 03 FF 
+program
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+4000: 0A C0 20 C0 1F C0 1E C0 1D C0 1C C0 1B C0 1A C0 
+4010: 19 C0 18 C0 17 C0 11 27 1F BF CF E5 D0 E0 DE BF 
+4020: CD BF 03 D0 00 C0 F8 94 FF CF 44 E0 41 B9 40 B9 
+4030: 5F E9 66 E8 71 E0 51 50 60 40 70 40 E1 F7 00 C0 
+4040: 00 00 F5 CF DD CF FF FF FF FF FF FF FF FF FF FF 
+4050: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+4060: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+(...some memory omitted here for brevity...)
+43E0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+43F0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
+\end{verbatim}
+
+Notice that the "AC020C01F" is set. That is from the hex. But the 01000...
+before it seems to be missing. Some deciphering of how the Arduino programs
+the Attiny is in order here. It also doesn't end the same.
+
+Regardless, when programming, the Arduino reports 70 bytes written, and
+likewise in the Mplab project memorymap.xml file, it also notes 70 bytes
+for the sketch. This lines up.\footnote{Although for an unknown reason, every command registers twice on the Arduino serial monitor, but this appears to be harmless.}
+
+The blinking LED works. Let's move on.
+
+\textcolor{green!60!blue!70}{\subsubsection{Conclusion on Arduino Programming Attiny10}}
+It's possible, but you have to make a dedicated jig (almost), so it might be easier to use the official programming tools. However, based on this https://www.avrfreaks.net/forum/pickit-4-and-avr-mcu I might not have a choice. So I will use the Arduino for now. But will have to devise what on board parts are req'd for programming, and incorporate into proto board layout.
+
+\textcolor{green!60!blue!70}{ \subsubsection{IO Port Switching Speed}}
+Using the above code without any delay\_ms, I get the following results from a default clock
+speed, and a 128KHz clock speed. This test was done to confirm that I could change the clock with
+\begin{verbatim}
+    //Write CCP
+    CCP = 0xD8;
+    //change CLK to 128KHz
+    CLKMSR = 0b01;
+\end{verbatim}
+There was no issue.
+\begin{verbatim}
+Default CLK (8MHz? or 1MHz?): 160KHz IO Switch
+128KHz CLK: 2.5KHz IO Switch
+\end{verbatim}
+I am going to pursue 128KHz for starters, for lower current dissipation. Note that with the Arduino loader, it is cumbersome to test and change code as you move along. It is
+therefore going to be necessary to use a programmer, with a dedicated header on board.
+\textcolor{green!60!blue!70}{ \subsubsection{VCC 1.8V}}
+The lowest power supported: 1.8V can be applied, without any configuration
+needed. It does not affect IO switching speed (although obviously amplitude is affected).
+\begin{verbatim}
+128KHz CLK (5.0V): 2.5256  KHz IO switch
+128KHz CLK (3.3V): 2.5477  KHz IO switch
+128KHz CLK (1.8V): 2.5849  KHz IO switch
+\end{verbatim}
+As voltage drops, IO increases.
+\\
+\\
+\textbf{VCC Dropout voltage:}
+\\
+From 1.5, it drops out at 1.248V or so. Comes back at about 1.34V
+\\
+\\
+Test size of 1.
+\\
+\\
+Can't run this with one (AA) battery, but you could with 2.
+\\
+\\
+Current Draw: 128KHz - IO test, 1.8V, 0.08mA (~78uA) (tested w/3478A)
+\\
+\\
+\textcolor{green!60!blue!70}{\subsection{Application}}
+First, I need a board for these and a programmer, to quickly program. Second, I need an application. I want extremely low power. Hopefully, solar with no batteries, to start. This is extremely low - that is the point. Let's keep this ridiculous.
+
+Given the power requirements put me under 1mA (with my current panels), I'm considering the following: EEPROMs would require SPI protocol. Doable, but overcomplicated for now.
+\\
+\\
+Eink (need to find a small and cheap enough option. So far, they have either too many pins, and/or use too much current. Something like what stores use to display prices would work, but that doesn't get the data out, only makes it readable.),
+\\
+\\
+Third option would be RF. That is a viable path, but not today. Let's skip that for now.
+\\
+\\
+Fourth option that comes to mind is IR. IR diodes, as in TV remotes, would work well here. I am choosing this as the first project. I will have dumb clients, that consist of - Attiny / IR / Sensor powered by solar. I will have a BBB that receives the IR data, and does all intelligent data gathering. To keep things simple, the IR will be binary ADC data, or otherwise sensor numbers. No SPI, no protocol complexity. That would require space on the Attiny.
+\\
+\\
+Let's build some boards based on the above.
+\\
+\\
+For sensors:
+While building, I came across an option. Hall effect sensors. I think also capacitive sensors can be used. This may find a use in a gate sensor, for when a driveway gate is opened or closed. With a small battery, it would work for years.
+
+Footprints: I had to make a footprint for this module on board package for one sensor. The solution to get footprints right? copy graphic image and make it into silkscreen on the board. Easy.
+
+The sensor I looked at was a temp and humidity sensor SHT11 (SHT10 is obsolete). It is low power enough. However, it's \$20. So not in my price range. Otherwise, it would work here. Looks like communication is a shift register, or SPI.
+
+\subsubsection{Magnetic Current Sensor}
+There is this:
+BM14270AMUV-LB
+Which is low enough current here (<1mA). But \$7 in qty, and req's I2C. Not today.
+
+\subsubsection{Accelerometers}
+These are an option.
+
+Best pinout (for deadbug) is LIS344ALHTR (but lacks vcc down to 1.8)
+2nd Best pinout with full 1.8 -3.6 vcc is ADXL337BCPZ-RL7
+(Keep in mind, these are low end options only)
+(Analog output only. keep it simple for now.)
+Runner up to all above, is KXTC9-2050-FR . But has worse pinout.
+
+Going with AD part. \$5 in single qty.
+Digital output Accelmeters are cheaper.
+
+All have tiny package sizes.
+
+Since I am grabbing 1 output only, will need to orient or choose correct output.
+
+\subsubsection{Temperature Sensors}
+Temperature can be boring, but why not. Let's throw one of these on:	LMT84LP . Pin compatible with LM35. Supply current is maybe 8uA. Extremely low.
+LM84 (1.5V starts, to 5.5), LM85 (1.8V to 5.5)
+
+\subsubsection{Gas Sensors}
+Lowest is 5mV as of writing on dkey. Skipping.
+
+\subsubsection{Supercap}
+For now, trying this:
+FG0V155ZF 
+
+
+
+
+
+
+
+
+
+
+
+\subsubsection{Hall Effect Sensors - Push Pull vs Open Drain Outputs}
+\begin{verbatim}9.1.1OutputTypeTradeoffsThe push-pulloutputallowsfor the lowestsystempowerconsumptionbecausethereis no currentleakagepathwhenthe outputdriveshighor low. The open-drainoutputinvolvesa leakagepaththroughthe externalpullupresistorwhenthe outputdriveslow.The open-drainoutputsof multipledevicescan be tied togetherto forma logicalAND.In this setup,if any sensordriveslow, the voltageon the sharednodebecomeslow. Thiscan allowa singleGPIOto measurean arrayofsensors \end{verbatim} From DRV5032 data sheet.
+
+\subsection{Starting Sensors}
+So as a recap, to start with affordable, low power sensors for my project, I have the following types:
+
+
+\end{document}
+

Attiny_Solar_Energy_Harvest/docs/19.aux

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+\@writefile{toc}{\contentsline {subsection}{\numberline {1.1}Micro Considerations}{1}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.1.1}Micro Notes}{1}}
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+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.5.5}Supercap}{8}}
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {1.5.6}Hall Effect Sensors - Push Pull vs Open Drain Outputs}{8}}
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+llupresistorwhenthe outputdriveslow.The open-drainoutputsof multipledevicescan 
+be tied togetherto forma logicalAND.In this setup,if any sensordriveslow, the v
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+

Attiny_Solar_Energy_Harvest/docs/19.tex

@@ -0,0 +1,273 @@
+
+\documentclass[11pt]{article}
+%Gummi|065|=)
+\usepackage{graphicx}
+\usepackage{caption}
+\usepackage{xcolor}
+\usepackage[vcentering,dvips]{geometry}
+\geometry{papersize={6in,9in},total={4.5in,6.8in}}
+%\title{\textbf{Door Alarm}}
+\author{Steak Electronics}
+\date{}
+\begin{document}
+
+%\maketitle
+
+%\tableofcontents
+\textcolor{green!60!blue!70}{
+  \section{Attiny Solar Energy Harvest Tests}}
+
+I have the following:
+\begin{itemize}
+\item Solar panels
+\item Attiny 10
+\end{itemize}
+To this list, I will add a supercap, and an energy harvesting IC. The goal being to load the super cap during the day, and to run 24/7. I will need an exceptionally low power micro. The super cap will need to be about 3.3V or 5V.
+\textcolor{green!60!blue!70}{
+\subsection{Micro Considerations}}
+The Arduino Atmega328P is not an option. I'm looking to have a current draw of only 1mA max, (ideally 500uA) when active. Moteino is also not an option for this. Those are made for batteries. I want to be battery free. A super cap, however can be used to store energy. I'll get to that shortly.
+
+For micros, I have some Attiny10 on hand, and these have a reasonably low power pull in active mode. Let's build those up first. What will the micro do? No idea. I haven't a clue.
+
+\textcolor{green!60!blue!70}{
+\subsubsection{Micro Notes}}
+Must run at 1.8V / 1MHz per front page of data sheet, for 200uA draw in active mode.
+\\
+\\
+
+
+\textcolor{green!60!blue!70}{
+\subsection{Energy Storage}}
+I don't want a battery. Let's go with a super cap. The solar panels will only be active some of the time, so I will want to harvest energy with some kind of IC into the cap when the sun is out.\footnote{Reference: www.analog.com/media/en/technical-documentation/technical-articles/solarenergyharvesting.pdf is a start. I'll need to do more research.}
+
+\textcolor{green!60!blue!70}{ \subsection{Make parts, not scrap}} I will 
+want to make sure that all parts I build are perf board parts, not 
+breadboard scrap (to be torn down and rebuilt again). This is an Attiny, 
+so no need to test much, yet.
+
+\textcolor{green!60!blue!70}{
+\subsection{Programming}}
+To program the Attiny10, I'll use the Arduino adapter from the Junk + Arduino blog. I built it up\footnote{Had slight error where the Arduino + board wouldn't read - pins too short on headers, then the arduino wouldn't boot - due to bad connection on perf board shield. Thankfully, the USB port didn't try to run. Protection circuitry cut in on the laptop.}, and was able to Read the memory. In order to upload to the board, you will need a compiler setup. You can possibly do it in AVRGCC, but instead I opted for either Arduino IDE (via Attiny10Core which didn't work), and then went to Mplab. In order for mplab 5.25 to work, it will need XC8 compiler, and there is a pack that can be downloaded through the IDE to get Attiny10 support.
+
+It appears the AVR Dragon (which I have) can not be used. However, other programmers can be used. Pickit 4, Mkavrii, stk600, I think.
+
+
+\textcolor{green!60!blue!70}{ \subsubsection{Testing Arduino Loader}}
+Tested this with the blink\_LED.c in code folder. The code is as simple as possible. 
+It is the following:
+\begin{verbatim}
+//#include <xc.h>
+#include <avr/io.h>
+#include <util/delay.h>
+
+int main(void)
+{
+    // PB2 output
+    DDRB = 1<<2;
+
+    while(1)
+    {
+        // Toggle PB2
+        PINB = 1<<2;
+        _delay_ms(500);
+    }
+}
+\end{verbatim}
+When programmed in Mplab, with XC8 compiler, and Attiny10 support, I get the following
+hex output:
+\begin{verbatim}
+:100000000AC020C01FC01EC01DC01CC01BC01AC01B
+:1000100019C018C017C011271FBFCFE5D0E0DEBF41
+:0A002000CDBF03D000C0F894FFCF5D
+:10002A0044E041B940B95FE966E871E05150604087
+:0A003A007040E1F700C00000F5CFB0
+:02004400DDCF0E
+:00000001FF
+\end{verbatim}
+The content of this hex isn't the focus of this passage. Instead, I want you to review the 
+results of a D for Dump Memory, by the Arduino Loader.
+\begin{verbatim}
+
+Current memory state:
+
+registers, SRAM
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+0000: 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0030: 00 00 00 00 00 00 03 00 00 79 00 03 00 00 00 00 
+0040: B7 AD AE FA 58 70 63 6B FB 5A B4 1B FF FF 35 3F 
+0050: 67 D7 33 43 DF 5F FB 72 C9 7D FE E9 9D C5 00 12 
+NVM lock
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F00: FF FF 
+configuration
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F40: FF FF 
+calibration
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F80: 79 FF 
+device ID
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3FC0: 1E 90 03 FF 
+program
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+4000: 0A C0 20 C0 1F C0 1E C0 1D C0 1C C0 1B C0 1A C0 
+4010: 19 C0 18 C0 17 C0 11 27 1F BF CF E5 D0 E0 DE BF 
+4020: CD BF 03 D0 00 C0 F8 94 FF CF 44 E0 41 B9 40 B9 
+4030: 5F E9 66 E8 71 E0 51 50 60 40 70 40 E1 F7 00 C0 
+4040: 00 00 F5 CF DD CF FF FF FF FF FF FF FF FF FF FF 
+4050: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+4060: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+(...some memory omitted here for brevity...)
+43E0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+43F0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
+\end{verbatim}
+
+Notice that the "AC020C01F" is set. That is from the hex. But the 01000...
+before it seems to be missing. Some deciphering of how the Arduino programs
+the Attiny is in order here. It also doesn't end the same.
+
+Regardless, when programming, the Arduino reports 70 bytes written, and
+likewise in the Mplab project memorymap.xml file, it also notes 70 bytes
+for the sketch. This lines up.\footnote{Although for an unknown reason, every command registers twice on the Arduino serial monitor, but this appears to be harmless.}
+
+The blinking LED works. Let's move on.
+
+\textcolor{green!60!blue!70}{\subsubsection{Conclusion on Arduino Programming Attiny10}}
+It's possible, but you have to make a dedicated jig (almost), so it might be easier to use the official programming tools. However, based on this https://www.avrfreaks.net/forum/pickit-4-and-avr-mcu I might not have a choice. So I will use the Arduino for now. But will have to devise what on board parts are req'd for programming, and incorporate into proto board layout.
+
+\textcolor{green!60!blue!70}{ \subsubsection{IO Port Switching Speed}}
+Using the above code without any delay\_ms, I get the following results from a default clock
+speed, and a 128KHz clock speed. This test was done to confirm that I could change the clock with
+\begin{verbatim}
+    //Write CCP
+    CCP = 0xD8;
+    //change CLK to 128KHz
+    CLKMSR = 0b01;
+\end{verbatim}
+There was no issue.
+\begin{verbatim}
+Default CLK (8MHz? or 1MHz?): 160KHz IO Switch
+128KHz CLK: 2.5KHz IO Switch
+\end{verbatim}
+I am going to pursue 128KHz for starters, for lower current dissipation. Note that with the Arduino loader, it is cumbersome to test and change code as you move along. It is
+therefore going to be necessary to use a programmer, with a dedicated header on board.
+\textcolor{green!60!blue!70}{ \subsubsection{VCC 1.8V}}
+The lowest power supported: 1.8V can be applied, without any configuration
+needed. It does not affect IO switching speed (although obviously amplitude is affected).
+\begin{verbatim}
+128KHz CLK (5.0V): 2.5256  KHz IO switch
+128KHz CLK (3.3V): 2.5477  KHz IO switch
+128KHz CLK (1.8V): 2.5849  KHz IO switch
+\end{verbatim}
+As voltage drops, IO increases.
+\\
+\\
+\textbf{VCC Dropout voltage:}
+\\
+From 1.5, it drops out at 1.248V or so. Comes back at about 1.34V
+\\
+\\
+Test size of 1.
+\\
+\\
+Can't run this with one (AA) battery, but you could with 2.
+\\
+\\
+Current Draw: 128KHz - IO test, 1.8V, 0.08mA (~78uA) (tested w/3478A)
+\\
+\\
+\textcolor{green!60!blue!70}{\subsection{Application}}
+First, I need a board for these and a programmer, to quickly program. Second, I need an application. I want extremely low power. Hopefully, solar with no batteries, to start. This is extremely low - that is the point. Let's keep this ridiculous.
+
+Given the power requirements put me under 1mA (with my current panels), I'm considering the following: EEPROMs would require SPI protocol. Doable, but overcomplicated for now.
+\\
+\\
+Eink (need to find a small and cheap enough option. So far, they have either too many pins, and/or use too much current. Something like what stores use to display prices would work, but that doesn't get the data out, only makes it readable.),
+\\
+\\
+Third option would be RF. That is a viable path, but not today. Let's skip that for now.
+\\
+\\
+Fourth option that comes to mind is IR. IR diodes, as in TV remotes, would work well here. I am choosing this as the first project. I will have dumb clients, that consist of - Attiny / IR / Sensor powered by solar. I will have a BBB that receives the IR data, and does all intelligent data gathering. To keep things simple, the IR will be binary ADC data, or otherwise sensor numbers. No SPI, no protocol complexity. That would require space on the Attiny.
+\\
+\\
+Let's build some boards based on the above.
+\\
+\\
+For sensors:
+While building, I came across an option. Hall effect sensors. I think also capacitive sensors can be used. This may find a use in a gate sensor, for when a driveway gate is opened or closed. With a small battery, it would work for years.
+
+Footprints: I had to make a footprint for this module on board package for one sensor. The solution to get footprints right? copy graphic image and make it into silkscreen on the board. Easy.
+
+The sensor I looked at was a temp and humidity sensor SHT11 (SHT10 is obsolete). It is low power enough. However, it's \$20. So not in my price range. Otherwise, it would work here. Looks like communication is a shift register, or SPI.
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Magnetic Current Sensor}}
+There is this:
+BM14270AMUV-LB
+Which is low enough current here (<1mA). But \$7 in qty, and req's I2C. Not today.
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Accelerometers}}
+These are an option.
+
+Best pinout (for deadbug) is LIS344ALHTR (but lacks vcc down to 1.8)
+2nd Best pinout with full 1.8 -3.6 vcc is ADXL337BCPZ-RL7
+(Keep in mind, these are low end options only)
+(Analog output only. keep it simple for now.)
+Runner up to all above, is KXTC9-2050-FR . But has worse pinout.
+
+Going with AD part. \$5 in single qty.
+Digital output Accelmeters are cheaper.
+
+All have tiny package sizes.
+
+Since I am grabbing 1 output only, will need to orient or choose correct output.
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Temperature Sensors}}
+Temperature can be boring, but why not. Let's throw one of these on:	LMT84LP . Pin compatible with LM35. Supply current is maybe 8uA. Extremely low.
+LM84 (1.5V starts, to 5.5), LM85 (1.8V to 5.5)
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Gas Sensors}}
+Lowest is 5mV as of writing on dkey. Skipping. The SHT would work, but its too expensive.
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Supercap}}
+For now, trying this:
+FG0V155ZF 
+
+
+
+
+
+
+
+
+
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Hall Effect Sensors - Push Pull vs Open Drain Outputs}}
+\begin{verbatim}9.1.1OutputTypeTradeoffsThe push-pulloutputallowsfor the lowestsystempowerconsumptionbecausethereis no currentleakagepathwhenthe outputdriveshighor low. The open-drainoutputinvolvesa leakagepaththroughthe externalpullupresistorwhenthe outputdriveslow.The open-drainoutputsof multipledevicescan be tied togetherto forma logicalAND.In this setup,if any sensordriveslow, the voltageon the sharednodebecomeslow. Thiscan allowa singleGPIOto measurean arrayofsensors
+\end{verbatim} From DRV5032 data sheet.
+
+\textcolor{green!60!blue!70}{ 
+\subsection{Starting Sensors}}
+So as a recap, to start with affordable, low power sensors for my project, I have the following types:
+\begin{itemize}
+\item Temp sensor (cheapest)
+\item Magnetic Sensor (hall effect) 
+\item Movement Sensor (accellerometer) (analog output) (tiny package) 
+\item capacitive sensor (azoteq)(may only be short range)
+\end{itemize}
+
+Output, I have not determined yet. IR will not work, as its too high power. Unless I dedicate a battery just for the IR diode... Or make it battery powered. I'll start with batteries, but for solar panel and supercap, it will likely not be viable, unless I transmit extremely rarely. That is also an option, however.
+
+\subsubsection{Farad to mA}
+1.5F supercap can supply 1.5A for 1 second. That is 0.025A for 60 seconds, or 25mA for a minute.
+Let's stay I use half that, so 12mA for 60 seconds is my supply. If I transmit once every other hour (when in sunlight)... 
+\end{document}
+

Attiny_Solar_Energy_Harvest/docs/19.tex~

@@ -0,0 +1,270 @@
+
+\documentclass[11pt]{article}
+%Gummi|065|=)
+\usepackage{graphicx}
+\usepackage{caption}
+\usepackage{xcolor}
+\usepackage[vcentering,dvips]{geometry}
+\geometry{papersize={6in,9in},total={4.5in,6.8in}}
+%\title{\textbf{Door Alarm}}
+\author{Steak Electronics}
+\date{}
+\begin{document}
+
+%\maketitle
+
+%\tableofcontents
+\textcolor{green!60!blue!70}{
+  \section{Attiny Solar Energy Harvest Tests}}
+
+I have the following:
+\begin{itemize}
+\item Solar panels
+\item Attiny 10
+\end{itemize}
+To this list, I will add a supercap, and an energy harvesting IC. The goal being to load the super cap during the day, and to run 24/7. I will need an exceptionally low power micro. The super cap will need to be about 3.3V or 5V.
+\textcolor{green!60!blue!70}{
+\subsection{Micro Considerations}}
+The Arduino Atmega328P is not an option. I'm looking to have a current draw of only 1mA max, (ideally 500uA) when active. Moteino is also not an option for this. Those are made for batteries. I want to be battery free. A super cap, however can be used to store energy. I'll get to that shortly.
+
+For micros, I have some Attiny10 on hand, and these have a reasonably low power pull in active mode. Let's build those up first. What will the micro do? No idea. I haven't a clue.
+
+\textcolor{green!60!blue!70}{
+\subsubsection{Micro Notes}}
+Must run at 1.8V / 1MHz per front page of data sheet, for 200uA draw in active mode.
+\\
+\\
+
+
+\textcolor{green!60!blue!70}{
+\subsection{Energy Storage}}
+I don't want a battery. Let's go with a super cap. The solar panels will only be active some of the time, so I will want to harvest energy with some kind of IC into the cap when the sun is out.\footnote{Reference: www.analog.com/media/en/technical-documentation/technical-articles/solarenergyharvesting.pdf is a start. I'll need to do more research.}
+
+\textcolor{green!60!blue!70}{ \subsection{Make parts, not scrap}} I will 
+want to make sure that all parts I build are perf board parts, not 
+breadboard scrap (to be torn down and rebuilt again). This is an Attiny, 
+so no need to test much, yet.
+
+\textcolor{green!60!blue!70}{
+\subsection{Programming}}
+To program the Attiny10, I'll use the Arduino adapter from the Junk + Arduino blog. I built it up\footnote{Had slight error where the Arduino + board wouldn't read - pins too short on headers, then the arduino wouldn't boot - due to bad connection on perf board shield. Thankfully, the USB port didn't try to run. Protection circuitry cut in on the laptop.}, and was able to Read the memory. In order to upload to the board, you will need a compiler setup. You can possibly do it in AVRGCC, but instead I opted for either Arduino IDE (via Attiny10Core which didn't work), and then went to Mplab. In order for mplab 5.25 to work, it will need XC8 compiler, and there is a pack that can be downloaded through the IDE to get Attiny10 support.
+
+It appears the AVR Dragon (which I have) can not be used. However, other programmers can be used. Pickit 4, Mkavrii, stk600, I think.
+
+
+\textcolor{green!60!blue!70}{ \subsubsection{Testing Arduino Loader}}
+Tested this with the blink\_LED.c in code folder. The code is as simple as possible. 
+It is the following:
+\begin{verbatim}
+//#include <xc.h>
+#include <avr/io.h>
+#include <util/delay.h>
+
+int main(void)
+{
+    // PB2 output
+    DDRB = 1<<2;
+
+    while(1)
+    {
+        // Toggle PB2
+        PINB = 1<<2;
+        _delay_ms(500);
+    }
+}
+\end{verbatim}
+When programmed in Mplab, with XC8 compiler, and Attiny10 support, I get the following
+hex output:
+\begin{verbatim}
+:100000000AC020C01FC01EC01DC01CC01BC01AC01B
+:1000100019C018C017C011271FBFCFE5D0E0DEBF41
+:0A002000CDBF03D000C0F894FFCF5D
+:10002A0044E041B940B95FE966E871E05150604087
+:0A003A007040E1F700C00000F5CFB0
+:02004400DDCF0E
+:00000001FF
+\end{verbatim}
+The content of this hex isn't the focus of this passage. Instead, I want you to review the 
+results of a D for Dump Memory, by the Arduino Loader.
+\begin{verbatim}
+
+Current memory state:
+
+registers, SRAM
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+0000: 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
+0030: 00 00 00 00 00 00 03 00 00 79 00 03 00 00 00 00 
+0040: B7 AD AE FA 58 70 63 6B FB 5A B4 1B FF FF 35 3F 
+0050: 67 D7 33 43 DF 5F FB 72 C9 7D FE E9 9D C5 00 12 
+NVM lock
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F00: FF FF 
+configuration
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F40: FF FF 
+calibration
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3F80: 79 FF 
+device ID
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+3FC0: 1E 90 03 FF 
+program
+      +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
+4000: 0A C0 20 C0 1F C0 1E C0 1D C0 1C C0 1B C0 1A C0 
+4010: 19 C0 18 C0 17 C0 11 27 1F BF CF E5 D0 E0 DE BF 
+4020: CD BF 03 D0 00 C0 F8 94 FF CF 44 E0 41 B9 40 B9 
+4030: 5F E9 66 E8 71 E0 51 50 60 40 70 40 E1 F7 00 C0 
+4040: 00 00 F5 CF DD CF FF FF FF FF FF FF FF FF FF FF 
+4050: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+4060: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+(...some memory omitted here for brevity...)
+43E0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
+43F0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
+\end{verbatim}
+
+Notice that the "AC020C01F" is set. That is from the hex. But the 01000...
+before it seems to be missing. Some deciphering of how the Arduino programs
+the Attiny is in order here. It also doesn't end the same.
+
+Regardless, when programming, the Arduino reports 70 bytes written, and
+likewise in the Mplab project memorymap.xml file, it also notes 70 bytes
+for the sketch. This lines up.\footnote{Although for an unknown reason, every command registers twice on the Arduino serial monitor, but this appears to be harmless.}
+
+The blinking LED works. Let's move on.
+
+\textcolor{green!60!blue!70}{\subsubsection{Conclusion on Arduino Programming Attiny10}}
+It's possible, but you have to make a dedicated jig (almost), so it might be easier to use the official programming tools. However, based on this https://www.avrfreaks.net/forum/pickit-4-and-avr-mcu I might not have a choice. So I will use the Arduino for now. But will have to devise what on board parts are req'd for programming, and incorporate into proto board layout.
+
+\textcolor{green!60!blue!70}{ \subsubsection{IO Port Switching Speed}}
+Using the above code without any delay\_ms, I get the following results from a default clock
+speed, and a 128KHz clock speed. This test was done to confirm that I could change the clock with
+\begin{verbatim}
+    //Write CCP
+    CCP = 0xD8;
+    //change CLK to 128KHz
+    CLKMSR = 0b01;
+\end{verbatim}
+There was no issue.
+\begin{verbatim}
+Default CLK (8MHz? or 1MHz?): 160KHz IO Switch
+128KHz CLK: 2.5KHz IO Switch
+\end{verbatim}
+I am going to pursue 128KHz for starters, for lower current dissipation. Note that with the Arduino loader, it is cumbersome to test and change code as you move along. It is
+therefore going to be necessary to use a programmer, with a dedicated header on board.
+\textcolor{green!60!blue!70}{ \subsubsection{VCC 1.8V}}
+The lowest power supported: 1.8V can be applied, without any configuration
+needed. It does not affect IO switching speed (although obviously amplitude is affected).
+\begin{verbatim}
+128KHz CLK (5.0V): 2.5256  KHz IO switch
+128KHz CLK (3.3V): 2.5477  KHz IO switch
+128KHz CLK (1.8V): 2.5849  KHz IO switch
+\end{verbatim}
+As voltage drops, IO increases.
+\\
+\\
+\textbf{VCC Dropout voltage:}
+\\
+From 1.5, it drops out at 1.248V or so. Comes back at about 1.34V
+\\
+\\
+Test size of 1.
+\\
+\\
+Can't run this with one (AA) battery, but you could with 2.
+\\
+\\
+Current Draw: 128KHz - IO test, 1.8V, 0.08mA (~78uA) (tested w/3478A)
+\\
+\\
+\textcolor{green!60!blue!70}{\subsection{Application}}
+First, I need a board for these and a programmer, to quickly program. Second, I need an application. I want extremely low power. Hopefully, solar with no batteries, to start. This is extremely low - that is the point. Let's keep this ridiculous.
+
+Given the power requirements put me under 1mA (with my current panels), I'm considering the following: EEPROMs would require SPI protocol. Doable, but overcomplicated for now.
+\\
+\\
+Eink (need to find a small and cheap enough option. So far, they have either too many pins, and/or use too much current. Something like what stores use to display prices would work, but that doesn't get the data out, only makes it readable.),
+\\
+\\
+Third option would be RF. That is a viable path, but not today. Let's skip that for now.
+\\
+\\
+Fourth option that comes to mind is IR. IR diodes, as in TV remotes, would work well here. I am choosing this as the first project. I will have dumb clients, that consist of - Attiny / IR / Sensor powered by solar. I will have a BBB that receives the IR data, and does all intelligent data gathering. To keep things simple, the IR will be binary ADC data, or otherwise sensor numbers. No SPI, no protocol complexity. That would require space on the Attiny.
+\\
+\\
+Let's build some boards based on the above.
+\\
+\\
+For sensors:
+While building, I came across an option. Hall effect sensors. I think also capacitive sensors can be used. This may find a use in a gate sensor, for when a driveway gate is opened or closed. With a small battery, it would work for years.
+
+Footprints: I had to make a footprint for this module on board package for one sensor. The solution to get footprints right? copy graphic image and make it into silkscreen on the board. Easy.
+
+The sensor I looked at was a temp and humidity sensor SHT11 (SHT10 is obsolete). It is low power enough. However, it's \$20. So not in my price range. Otherwise, it would work here. Looks like communication is a shift register, or SPI.
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Magnetic Current Sensor}}
+There is this:
+BM14270AMUV-LB
+Which is low enough current here (<1mA). But \$7 in qty, and req's I2C. Not today.
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Accelerometers}}
+These are an option.
+
+Best pinout (for deadbug) is LIS344ALHTR (but lacks vcc down to 1.8)
+2nd Best pinout with full 1.8 -3.6 vcc is ADXL337BCPZ-RL7
+(Keep in mind, these are low end options only)
+(Analog output only. keep it simple for now.)
+Runner up to all above, is KXTC9-2050-FR . But has worse pinout.
+
+Going with AD part. \$5 in single qty.
+Digital output Accelmeters are cheaper.
+
+All have tiny package sizes.
+
+Since I am grabbing 1 output only, will need to orient or choose correct output.
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Temperature Sensors}}
+Temperature can be boring, but why not. Let's throw one of these on:	LMT84LP . Pin compatible with LM35. Supply current is maybe 8uA. Extremely low.
+LM84 (1.5V starts, to 5.5), LM85 (1.8V to 5.5)
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Gas Sensors}}
+Lowest is 5mV as of writing on dkey. Skipping. The SHT would work, but its too expensive.
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Supercap}}
+For now, trying this:
+FG0V155ZF 
+
+
+
+
+
+
+
+
+
+
+\textcolor{green!60!blue!70}{ 
+\subsubsection{Hall Effect Sensors - Push Pull vs Open Drain Outputs}}
+\begin{verbatim}9.1.1OutputTypeTradeoffsThe push-pulloutputallowsfor the lowestsystempowerconsumptionbecausethereis no currentleakagepathwhenthe outputdriveshighor low. The open-drainoutputinvolvesa leakagepaththroughthe externalpullupresistorwhenthe outputdriveslow.The open-drainoutputsof multipledevicescan be tied togetherto forma logicalAND.In this setup,if any sensordriveslow, the voltageon the sharednodebecomeslow. Thiscan allowa singleGPIOto measurean arrayofsensors
+\end{verbatim} From DRV5032 data sheet.
+
+\textcolor{green!60!blue!70}{ 
+\subsection{Starting Sensors}}
+So as a recap, to start with affordable, low power sensors for my project, I have the following types:
+\begin{itemize}
+\item Temp sensor (cheapest)
+\item Magnetic Sensor (hall effect) 
+\item Movement Sensor (accellerometer) (analog output) (tiny package) 
+\item capacitive sensor (azoteq)(may only be short range)
+\end{itemize}
+
+And then output is currently IR via diode. Future output would be RF.
+
+\end{document}
+

OV7670_Image_Sensor/footprints/PinHeader_1x01_EDIT.kicad_mod

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+(module Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical (layer F.Cu) (tedit 5E6DA40C)
+  (descr "Through hole straight pin header, 1x01, 2.54mm pitch, single row")
+  (tags "Through hole pin header THT 1x01 2.54mm single row")
+  (fp_text reference REF** (at 0 -2.33) (layer F.SilkS)
+    (effects (font (size 1 1) (thickness 0.15)))
+  )
+  (fp_text value PinHeader_1x01_P2.54mm_Vertical (at 0 2.33) (layer F.Fab)
+    (effects (font (size 1 1) (thickness 0.15)))
+  )
+  (fp_line (start -0.635 -1.27) (end 1.27 -1.27) (layer F.Fab) (width 0.1))
+  (fp_line (start 1.27 -1.27) (end 1.27 1.27) (layer F.Fab) (width 0.1))
+  (fp_line (start -1.27 1.27) (end -1.27 -0.635) (layer F.Fab) (width 0.1))
+  (fp_line (start -1.27 -0.635) (end -0.635 -1.27) (layer F.Fab) (width 0.1))
+  (fp_line (start -1.8 -1.8) (end -1.8 1.8) (layer F.CrtYd) (width 0.05))
+  (fp_line (start -1.8 1.8) (end 1.8 1.8) (layer F.CrtYd) (width 0.05))
+  (fp_line (start 1.8 1.8) (end 1.8 -1.8) (layer F.CrtYd) (width 0.05))
+  (fp_line (start 1.8 -1.8) (end -1.8 -1.8) (layer F.CrtYd) (width 0.05))
+  (fp_text user %R (at 0 0 90) (layer F.Fab)
+    (effects (font (size 1 1) (thickness 0.15)))
+  )
+  (pad 1 thru_hole oval (at 0 0) (size 1.7 1.7) (drill 1) (layers *.Cu *.Mask))
+  (model ${KISYS3DMOD}/Connector_PinHeader_2.54mm.3dshapes/PinHeader_1x01_P2.54mm_Vertical.wrl
+    (at (xyz 0 0 0))
+    (scale (xyz 1 1 1))
+    (rotate (xyz 0 0 0))
+  )
+)

OV7670_Image_Sensor/footprints/PinHeader_1x05_P2.54mm_ProtoBoard_Rev.kicad_mod

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+(module Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical (layer F.Cu) (tedit 5E82DFC5)
+  (descr "Through hole straight pin header, 1x05, 2.54mm pitch, single row")
+  (tags "Through hole pin header THT 1x05 2.54mm single row")
+  (fp_text reference REF** (at 0 -2.33) (layer F.SilkS) hide
+    (effects (font (size 1 1) (thickness 0.15)))
+  )
+  (fp_text value PinHeader_1x05_P2.54mm_Vertical (at 0 12.49) (layer F.Fab)
+    (effects (font (size 1 1) (thickness 0.15)))
+  )
+  (fp_text user %R (at 0 5.08 90) (layer F.Fab)
+    (effects (font (size 1 1) (thickness 0.15)))
+  )
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+  (pad 5 thru_hole oval (at 0 10.16) (size 1.7 1.7) (drill 1) (layers *.Cu *.Mask))
+  (model ${KISYS3DMOD}/Connector_PinHeader_2.54mm.3dshapes/PinHeader_1x05_P2.54mm_Vertical.wrl
+    (at (xyz 0 0 0))
+    (scale (xyz 1 1 1))
+    (rotate (xyz 0 0 0))
+  )
+)

OV7670_Image_Sensor/footprints/PinHeader_1x20_P1.27mm_ProtoBoard_Rev.kicad_mod

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+(module Connector_PinHeader_1.27mm:PinHeader_1x20_P1.27mm_Vertical (layer F.Cu) (tedit 5E82DEDE)
+  (descr "Through hole straight pin header, 1x20, 1.27mm pitch, single row")
+  (tags "Through hole pin header THT 1x20 1.27mm single row")
+  (fp_text reference REF** (at 0 -1.695) (layer F.SilkS) hide
+    (effects (font (size 1 1) (thickness 0.15)))
+  )
+  (fp_text value PinHeader_1x20_P1.27mm_Vertical (at 0 25.825) (layer F.Fab)
+    (effects (font (size 1 1) (thickness 0.15)))
+  )
+  (fp_line (start -0.525 -0.635) (end 1.05 -0.635) (layer F.Fab) (width 0.1))
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+  (fp_line (start 1.55 -1.15) (end -1.55 -1.15) (layer F.CrtYd) (width 0.05))
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+  )
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+  (pad 20 thru_hole oval (at 0 24.13) (size 1 1) (drill 0.65) (layers *.Cu *.Mask))
+  (model ${KISYS3DMOD}/Connector_PinHeader_1.27mm.3dshapes/PinHeader_1x20_P1.27mm_Vertical.wrl
+    (at (xyz 0 0 0))
+    (scale (xyz 1 1 1))
+    (rotate (xyz 0 0 0))
+  )
+)

OV7670_Image_Sensor/pcb/fp-lib-table

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+(fp_lib_table
+  (lib (name footprints)(type KiCad)(uri /home/layoutdev/Desktop/code/documentation_general/Electronics_Projects_2020/OV7670_Image_Sensor/footprints)(options "")(descr ""))
+)

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OV7670_Image_Sensor/pcb/gerbers/pcb.drl

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OV7670_Image_Sensor/pcb/pcb-cache.lib

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+EESchema-LIBRARY Version 2.4
+#encoding utf-8
+#
+# Connector_Generic_Conn_02x09_Odd_Even
+#
+DEF Connector_Generic_Conn_02x09_Odd_Even J 0 40 Y N 1 F N
+F0 "J" 50 500 50 H V C CNN
+F1 "Connector_Generic_Conn_02x09_Odd_Even" 50 -500 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ Connector*:*_2x??_*
+$ENDFPLIST
+DRAW
+S -50 -395 0 -405 1 1 6 N
+S -50 -295 0 -305 1 1 6 N
+S -50 -195 0 -205 1 1 6 N
+S -50 -95 0 -105 1 1 6 N
+S -50 5 0 -5 1 1 6 N
+S -50 105 0 95 1 1 6 N
+S -50 205 0 195 1 1 6 N
+S -50 305 0 295 1 1 6 N
+S -50 405 0 395 1 1 6 N
+S -50 450 150 -450 1 1 10 f
+S 150 -395 100 -405 1 1 6 N
+S 150 -295 100 -305 1 1 6 N
+S 150 -195 100 -205 1 1 6 N
+S 150 -95 100 -105 1 1 6 N
+S 150 5 100 -5 1 1 6 N
+S 150 105 100 95 1 1 6 N
+S 150 205 100 195 1 1 6 N
+S 150 305 100 295 1 1 6 N
+S 150 405 100 395 1 1 6 N
+X Pin_1 1 -200 400 150 R 50 50 1 1 P
+X Pin_10 10 300 0 150 L 50 50 1 1 P
+X Pin_11 11 -200 -100 150 R 50 50 1 1 P
+X Pin_12 12 300 -100 150 L 50 50 1 1 P
+X Pin_13 13 -200 -200 150 R 50 50 1 1 P
+X Pin_14 14 300 -200 150 L 50 50 1 1 P
+X Pin_15 15 -200 -300 150 R 50 50 1 1 P
+X Pin_16 16 300 -300 150 L 50 50 1 1 P
+X Pin_17 17 -200 -400 150 R 50 50 1 1 P
+X Pin_18 18 300 -400 150 L 50 50 1 1 P
+X Pin_2 2 300 400 150 L 50 50 1 1 P
+X Pin_3 3 -200 300 150 R 50 50 1 1 P
+X Pin_4 4 300 300 150 L 50 50 1 1 P
+X Pin_5 5 -200 200 150 R 50 50 1 1 P
+X Pin_6 6 300 200 150 L 50 50 1 1 P
+X Pin_7 7 -200 100 150 R 50 50 1 1 P
+X Pin_8 8 300 100 150 L 50 50 1 1 P
+X Pin_9 9 -200 0 150 R 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Device_R
+#
+DEF Device_R R 0 0 N Y 1 F N
+F0 "R" 80 0 50 V V C CNN
+F1 "Device_R" 0 0 50 V V C CNN
+F2 "" -70 0 50 V I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ R_*
+$ENDFPLIST
+DRAW
+S -40 -100 40 100 0 1 10 N
+X ~ 1 0 150 50 D 50 50 1 1 P
+X ~ 2 0 -150 50 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# MCU_Module_Arduino_UNO_R3
+#
+DEF MCU_Module_Arduino_UNO_R3 A 0 40 Y Y 1 F N
+F0 "A" -200 1050 50 H V R CNN
+F1 "MCU_Module_Arduino_UNO_R3" -200 950 50 H V R CNN
+F2 "Module:Arduino_UNO_R3" 150 -1050 50 H I L CNN
+F3 "" -200 1050 50 H I C CNN
+$FPLIST
+ Arduino*UNO*R3*
+$ENDFPLIST
+DRAW
+S -400 900 400 -1000 0 1 10 f
+X NC 1 -500 -800 100 R 50 50 1 1 N N
+X A1 10 500 -100 100 L 50 50 1 1 B
+X A2 11 500 -200 100 L 50 50 1 1 B
+X A3 12 500 -300 100 L 50 50 1 1 B
+X A4/SDA 13 500 -400 100 L 50 50 1 1 B
+X A5/SCL 14 500 -500 100 L 50 50 1 1 B
+X D0/RX 15 -500 600 100 R 50 50 1 1 B
+X D1/TX 16 -500 500 100 R 50 50 1 1 B
+X D2 17 -500 400 100 R 50 50 1 1 B
+X D3 18 -500 300 100 R 50 50 1 1 B
+X D4 19 -500 200 100 R 50 50 1 1 B
+X IOREF 2 500 400 100 L 50 50 1 1 O
+X D5 20 -500 100 100 R 50 50 1 1 B
+X D6 21 -500 0 100 R 50 50 1 1 B
+X D7 22 -500 -100 100 R 50 50 1 1 B
+X D8 23 -500 -200 100 R 50 50 1 1 B
+X D9 24 -500 -300 100 R 50 50 1 1 B
+X D10 25 -500 -400 100 R 50 50 1 1 B
+X D11 26 -500 -500 100 R 50 50 1 1 B
+X D12 27 -500 -600 100 R 50 50 1 1 B
+X D13 28 -500 -700 100 R 50 50 1 1 B
+X GND 29 -100 -1100 100 U 50 50 1 1 W
+X RESET 3 500 600 100 L 50 50 1 1 I
+X AREF 30 500 200 100 L 50 50 1 1 I
+X SDA 31 500 -700 100 L 50 50 1 1 B
+X SCL 32 500 -800 100 L 50 50 1 1 B
+X 3V3 4 100 1000 100 D 50 50 1 1 w
+X +5V 5 200 1000 100 D 50 50 1 1 w
+X GND 6 0 -1100 100 U 50 50 1 1 W
+X GND 7 100 -1100 100 U 50 50 1 1 W
+X VIN 8 -100 1000 100 D 50 50 1 1 W
+X A0 9 500 0 100 L 50 50 1 1 B
+ENDDRAW
+ENDDEF
+#
+# power_+3V3
+#
+DEF power_+3V3 #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -150 50 H I C CNN
+F1 "power_+3V3" 0 140 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+ALIAS +3.3V
+DRAW
+P 2 0 1 0 -30 50 0 100 N
+P 2 0 1 0 0 0 0 100 N
+P 2 0 1 0 0 100 30 50 N
+X +3V3 1 0 0 0 U 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
+# power_+5V
+#
+DEF power_+5V #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -150 50 H I C CNN
+F1 "power_+5V" 0 140 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+P 2 0 1 0 -30 50 0 100 N
+P 2 0 1 0 0 0 0 100 N
+P 2 0 1 0 0 100 30 50 N
+X +5V 1 0 0 0 U 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
+# power_GND
+#
+DEF power_GND #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -250 50 H I C CNN
+F1 "power_GND" 0 -150 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+P 6 0 1 0 0 0 0 -50 50 -50 0 -100 -50 -50 0 -50 N
+X GND 1 0 0 0 D 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
+#End Library

OV7670_Image_Sensor/pcb/pcb.bak

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+EESchema Schematic File Version 4
+EELAYER 26 0
+EELAYER END
+$Descr USLetter 11000 8500
+encoding utf-8
+Sheet 1 1
+Title ""
+Date ""
+Rev ""
+Comp ""
+Comment1 ""
+Comment2 ""
+Comment3 ""
+Comment4 ""
+$EndDescr
+$Comp
+L Connector_Generic:Conn_02x09_Counter_Clockwise J1
+U 1 1 5E82D94D
+P 3450 3900
+F 0 "J1" H 2975 5075 50  0000 C CNN
+F 1 "Conn_02x09_Counter_Clockwise" H 2850 5200 50  0000 C CNN
+F 2 "Connector_PinHeader_2.54mm:PinHeader_2x09_P2.54mm_Vertical" H 3450 3900 50  0001 C CNN
+F 3 "~" H 3450 3900 50  0001 C CNN
+	1    3450 3900
+	1    0    0    -1  
+$EndComp
+Text Notes 3450 3025 0    50   ~ 0
+OV7670
+$Comp
+L power:+3V3 #PWR0101
+U 1 1 5E82DA8E
+P 3250 3500
+F 0 "#PWR0101" H 3250 3350 50  0001 C CNN
+F 1 "+3V3" H 3265 3673 50  0000 C CNN
+F 2 "" H 3250 3500 50  0001 C CNN
+F 3 "" H 3250 3500 50  0001 C CNN
+	1    3250 3500
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR0102
+U 1 1 5E82DAF2
+P 4150 3500
+F 0 "#PWR0102" H 4150 3250 50  0001 C CNN
+F 1 "GND" H 4155 3327 50  0000 C CNN
+F 2 "" H 4150 3500 50  0001 C CNN
+F 3 "" H 4150 3500 50  0001 C CNN
+	1    4150 3500
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	4150 3500 3750 3500
+Text Label 3250 3600 2    50   ~ 0
+SIOC
+Text Label 3250 3700 2    50   ~ 0
+VSYNC
+Text Label 3250 3800 2    50   ~ 0
+PCLK
+Text Label 3750 3600 0    50   ~ 0
+SIOD
+Text Label 3750 3800 0    50   ~ 0
+XCLK
+Text Label 3250 4300 2    50   ~ 0
+RESET
+Text Label 3750 4300 0    50   ~ 0
+PWDN
+Text Label 3750 4200 0    50   ~ 0
+D0
+Text Label 3750 4100 0    50   ~ 0
+D2
+Text Label 3750 4000 0    50   ~ 0
+D4
+Text Label 3750 3900 0    50   ~ 0
+D6
+Text Label 3250 4200 2    50   ~ 0
+D1
+Text Label 3250 4100 2    50   ~ 0
+D3
+Text Label 3250 4000 2    50   ~ 0
+D5
+Text Label 3250 3900 2    50   ~ 0
+D7
+Text Label 3750 3700 0    50   ~ 0
+NC-16
+$Comp
+L MCU_Module:Arduino_UNO_R3 A1
+U 1 1 5E82DE4B
+P 6450 3875
+F 0 "A1" H 5850 5175 50  0000 C CNN
+F 1 "Arduino_UNO_R3" H 5875 5000 50  0000 C CNN
+F 2 "Module:Arduino_UNO_R3" H 6600 2825 50  0001 L CNN
+F 3 "https://www.arduino.cc/en/Main/arduinoBoardUno" H 6250 4925 50  0001 C CNN
+	1    6450 3875
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR0103
+U 1 1 5E82E0BD
+P 6550 4975
+F 0 "#PWR0103" H 6550 4725 50  0001 C CNN
+F 1 "GND" H 6555 4802 50  0000 C CNN
+F 2 "" H 6550 4975 50  0001 C CNN
+F 3 "" H 6550 4975 50  0001 C CNN
+	1    6550 4975
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	6550 4975 6450 4975
+Connection ~ 6550 4975
+Connection ~ 6450 4975
+Wire Wire Line
+	6450 4975 6350 4975
+$Comp
+L power:+3V3 #PWR0104
+U 1 1 5E82E1A2
+P 6550 2875
+F 0 "#PWR0104" H 6550 2725 50  0001 C CNN
+F 1 "+3V3" H 6565 3048 50  0000 C CNN
+F 2 "" H 6550 2875 50  0001 C CNN
+F 3 "" H 6550 2875 50  0001 C CNN
+	1    6550 2875
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:+5V #PWR0105
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+	1    6650 2875
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+Wire Wire Line
+	3750 3600 4450 3600
+$Comp
+L Device:R R2
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+F 1 "10K" H 4520 3405 50  0000 L CNN
+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 4380 3450 50  0001 C CNN
+F 3 "~" H 4450 3450 50  0001 C CNN
+	1    4450 3450
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+	1    4450 3300
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+Text Label 6950 4275 0    50   ~ 0
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+U 1 1 5E82EAE2
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+F 3 "~" H 2700 3450 50  0001 C CNN
+	1    2700 3450
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+F 3 "" H 2700 3300 50  0001 C CNN
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+F 3 "~" H 5300 3725 50  0001 C CNN
+	1    5300 3725
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+$EndComp
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+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 5230 4025 50  0001 C CNN
+F 3 "~" H 5300 4025 50  0001 C CNN
+	1    5300 4025
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+$EndComp
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+Wire Wire Line
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+$Comp
+L power:GND #PWR0108
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+F 3 "" H 5300 4175 50  0001 C CNN
+	1    5300 4175
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
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+Wire Wire Line
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+$Comp
+L power:GND #PWR0109
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+F 3 "" H 3750 4300 50  0001 C CNN
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+$EndComp
+$Comp
+L power:+3V3 #PWR0110
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OV7670_Image_Sensor/pcb/pcb.net

@@ -0,0 +1,238 @@
+(export (version D)
+  (design
+    (source /home/layoutdev/Desktop/code/documentation_general/Electronics_Projects_2020/OV7670_Image_Sensor/pcb/pcb.sch)
+    (date "Tue 31 Mar 2020 02:21:42 AM EDT")
+    (tool "Eeschema 5.0.2+dfsg1-1~bpo9+1")
+    (sheet (number 1) (name /) (tstamps /)
+      (title_block
+        (title)
+        (company)
+        (rev)
+        (date)
+        (source pcb.sch)
+        (comment (number 1) (value ""))
+        (comment (number 2) (value ""))
+        (comment (number 3) (value ""))
+        (comment (number 4) (value "")))))
+  (components
+    (comp (ref J1)
+      (value Conn_02x09_Counter_Clockwise)
+      (footprint Connector_PinHeader_2.54mm:PinHeader_2x09_P2.54mm_Vertical)
+      (datasheet ~)
+      (libsource (lib Connector_Generic) (part Conn_02x09_Odd_Even) (description "Generic connector, double row, 02x09, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/)"))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5E82D94D))
+    (comp (ref A1)
+      (value Arduino_UNO_R3)
+      (footprint Module:Arduino_UNO_R3)
+      (datasheet https://www.arduino.cc/en/Main/arduinoBoardUno)
+      (libsource (lib MCU_Module) (part Arduino_UNO_R3) (description "Arduino UNO Microcontroller Module, release 3"))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5E82DE4B))
+    (comp (ref R2)
+      (value 10K)
+      (footprint Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder)
+      (datasheet ~)
+      (libsource (lib Device) (part R) (description Resistor))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5E82E56A))
+    (comp (ref R1)
+      (value 10K)
+      (footprint Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder)
+      (datasheet ~)
+      (libsource (lib Device) (part R) (description Resistor))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5E82EAE2))
+    (comp (ref R3)
+      (value R680)
+      (footprint Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder)
+      (datasheet ~)
+      (libsource (lib Device) (part R) (description Resistor))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5E82F3BF))
+    (comp (ref R4)
+      (value R1K)
+      (footprint Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder)
+      (datasheet ~)
+      (libsource (lib Device) (part R) (description Resistor))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5E82F408)))
+  (libparts
+    (libpart (lib Connector_Generic) (part Conn_02x09_Odd_Even)
+      (description "Generic connector, double row, 02x09, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/)")
+      (docs ~)
+      (footprints
+        (fp Connector*:*_2x??_*))
+      (fields
+        (field (name Reference) J)
+        (field (name Value) Conn_02x09_Odd_Even))
+      (pins
+        (pin (num 1) (name Pin_1) (type passive))
+        (pin (num 2) (name Pin_2) (type passive))
+        (pin (num 3) (name Pin_3) (type passive))
+        (pin (num 4) (name Pin_4) (type passive))
+        (pin (num 5) (name Pin_5) (type passive))
+        (pin (num 6) (name Pin_6) (type passive))
+        (pin (num 7) (name Pin_7) (type passive))
+        (pin (num 8) (name Pin_8) (type passive))
+        (pin (num 9) (name Pin_9) (type passive))
+        (pin (num 10) (name Pin_10) (type passive))
+        (pin (num 11) (name Pin_11) (type passive))
+        (pin (num 12) (name Pin_12) (type passive))
+        (pin (num 13) (name Pin_13) (type passive))
+        (pin (num 14) (name Pin_14) (type passive))
+        (pin (num 15) (name Pin_15) (type passive))
+        (pin (num 16) (name Pin_16) (type passive))
+        (pin (num 17) (name Pin_17) (type passive))
+        (pin (num 18) (name Pin_18) (type passive))))
+    (libpart (lib Device) (part R)
+      (description Resistor)
+      (docs ~)
+      (footprints
+        (fp R_*))
+      (fields
+        (field (name Reference) R)
+        (field (name Value) R))
+      (pins
+        (pin (num 1) (name ~) (type passive))
+        (pin (num 2) (name ~) (type passive))))
+    (libpart (lib MCU_Module) (part Arduino_UNO_R3)
+      (description "Arduino UNO Microcontroller Module, release 3")
+      (docs https://www.arduino.cc/en/Main/arduinoBoardUno)
+      (footprints
+        (fp Arduino*UNO*R3*))
+      (fields
+        (field (name Reference) A)
+        (field (name Value) Arduino_UNO_R3)
+        (field (name Footprint) Module:Arduino_UNO_R3))
+      (pins
+        (pin (num 1) (name NC) (type NotConnected))
+        (pin (num 2) (name IOREF) (type output))
+        (pin (num 3) (name RESET) (type input))
+        (pin (num 4) (name 3V3) (type power_out))
+        (pin (num 5) (name +5V) (type power_out))
+        (pin (num 6) (name GND) (type power_in))
+        (pin (num 7) (name GND) (type power_in))
+        (pin (num 8) (name VIN) (type power_in))
+        (pin (num 9) (name A0) (type BiDi))
+        (pin (num 10) (name A1) (type BiDi))
+        (pin (num 11) (name A2) (type BiDi))
+        (pin (num 12) (name A3) (type BiDi))
+        (pin (num 13) (name A4/SDA) (type BiDi))
+        (pin (num 14) (name A5/SCL) (type BiDi))
+        (pin (num 15) (name D0/RX) (type BiDi))
+        (pin (num 16) (name D1/TX) (type BiDi))
+        (pin (num 17) (name D2) (type BiDi))
+        (pin (num 18) (name D3) (type BiDi))
+        (pin (num 19) (name D4) (type BiDi))
+        (pin (num 20) (name D5) (type BiDi))
+        (pin (num 21) (name D6) (type BiDi))
+        (pin (num 22) (name D7) (type BiDi))
+        (pin (num 23) (name D8) (type BiDi))
+        (pin (num 24) (name D9) (type BiDi))
+        (pin (num 25) (name D10) (type BiDi))
+        (pin (num 26) (name D11) (type BiDi))
+        (pin (num 27) (name D12) (type BiDi))
+        (pin (num 28) (name D13) (type BiDi))
+        (pin (num 29) (name GND) (type power_in))
+        (pin (num 30) (name AREF) (type input))
+        (pin (num 31) (name SDA) (type BiDi))
+        (pin (num 32) (name SCL) (type BiDi)))))
+  (libraries
+    (library (logical Connector_Generic)
+      (uri /usr/share/kicad/library/Connector_Generic.lib))
+    (library (logical Device)
+      (uri /usr/share/kicad/library/Device.lib))
+    (library (logical MCU_Module)
+      (uri /usr/share/kicad/library/MCU_Module.lib)))
+  (nets
+    (net (code 1) (name +3V3)
+      (node (ref J1) (pin 17))
+      (node (ref A1) (pin 4))
+      (node (ref R1) (pin 1))
+      (node (ref R2) (pin 1))
+      (node (ref J1) (pin 1)))
+    (net (code 2) (name +5V)
+      (node (ref A1) (pin 5)))
+    (net (code 3) (name GND)
+      (node (ref R4) (pin 2))
+      (node (ref J1) (pin 2))
+      (node (ref J1) (pin 18))
+      (node (ref A1) (pin 29))
+      (node (ref A1) (pin 7))
+      (node (ref A1) (pin 6)))
+    (net (code 4) (name /D0)
+      (node (ref A1) (pin 9))
+      (node (ref J1) (pin 16)))
+    (net (code 5) (name "Net-(A1-Pad8)")
+      (node (ref A1) (pin 8)))
+    (net (code 6) (name "Net-(A1-Pad32)")
+      (node (ref A1) (pin 32)))
+    (net (code 7) (name "Net-(A1-Pad31)")
+      (node (ref A1) (pin 31)))
+    (net (code 8) (name "Net-(A1-Pad30)")
+      (node (ref A1) (pin 30)))
+    (net (code 9) (name "Net-(A1-Pad3)")
+      (node (ref A1) (pin 3)))
+    (net (code 10) (name "Net-(A1-Pad28)")
+      (node (ref A1) (pin 28)))
+    (net (code 11) (name "Net-(A1-Pad18)")
+      (node (ref A1) (pin 18))
+      (node (ref R3) (pin 1)))
+    (net (code 12) (name /XCLK)
+      (node (ref J1) (pin 8))
+      (node (ref R3) (pin 2))
+      (node (ref R4) (pin 1)))
+    (net (code 13) (name /NC-16)
+      (node (ref J1) (pin 6)))
+    (net (code 14) (name /SIOC)
+      (node (ref R1) (pin 2))
+      (node (ref J1) (pin 3))
+      (node (ref A1) (pin 14)))
+    (net (code 15) (name /PCLK)
+      (node (ref J1) (pin 7))
+      (node (ref A1) (pin 27)))
+    (net (code 16) (name "Net-(A1-Pad26)")
+      (node (ref A1) (pin 26)))
+    (net (code 17) (name "Net-(A1-Pad25)")
+      (node (ref A1) (pin 25)))
+    (net (code 18) (name "Net-(A1-Pad24)")
+      (node (ref A1) (pin 24)))
+    (net (code 19) (name "Net-(A1-Pad23)")
+      (node (ref A1) (pin 23)))
+    (net (code 20) (name /D7)
+      (node (ref A1) (pin 22))
+      (node (ref J1) (pin 9)))
+    (net (code 21) (name /D6)
+      (node (ref J1) (pin 10))
+      (node (ref A1) (pin 21)))
+    (net (code 22) (name /D5)
+      (node (ref A1) (pin 20))
+      (node (ref J1) (pin 11)))
+    (net (code 23) (name "Net-(A1-Pad2)")
+      (node (ref A1) (pin 2)))
+    (net (code 24) (name /D4)
+      (node (ref J1) (pin 12))
+      (node (ref A1) (pin 19)))
+    (net (code 25) (name /VSYNC)
+      (node (ref A1) (pin 17))
+      (node (ref J1) (pin 5)))
+    (net (code 26) (name "Net-(A1-Pad16)")
+      (node (ref A1) (pin 16)))
+    (net (code 27) (name "Net-(A1-Pad15)")
+      (node (ref A1) (pin 15)))
+    (net (code 28) (name /SIOD)
+      (node (ref J1) (pin 4))
+      (node (ref R2) (pin 2))
+      (node (ref A1) (pin 13)))
+    (net (code 29) (name /D3)
+      (node (ref J1) (pin 13))
+      (node (ref A1) (pin 12)))
+    (net (code 30) (name /D2)
+      (node (ref A1) (pin 11))
+      (node (ref J1) (pin 14)))
+    (net (code 31) (name /D1)
+      (node (ref A1) (pin 10))
+      (node (ref J1) (pin 15)))
+    (net (code 32) (name "Net-(A1-Pad1)")
+      (node (ref A1) (pin 1)))))

OV7670_Image_Sensor/pcb/pcb.pro

@@ -0,0 +1,41 @@
+update=Tue 11 Oct 2016 05:25:07 PM PDT
+version=1
+last_client=kicad
+[cvpcb]
+version=1
+NetIExt=net
+[pcbnew]
+version=1
+PageLayoutDescrFile=
+LastNetListRead=
+PadDrill=0.600000000000
+PadDrillOvalY=0.600000000000
+PadSizeH=1.500000000000
+PadSizeV=1.500000000000
+PcbTextSizeV=1.016000000000
+PcbTextSizeH=1.016000000000
+PcbTextThickness=0.152400000000
+ModuleTextSizeV=1.016000000000
+ModuleTextSizeH=1.016000000000
+ModuleTextSizeThickness=0.152400000000
+SolderMaskClearance=0.003000000000
+SolderMaskMinWidth=0.004000000000
+DrawSegmentWidth=0.152400000000
+BoardOutlineThickness=0.152400000000
+ModuleOutlineThickness=0.152400000000
+[eeschema]
+version=1
+LibDir=
+[eeschema/libraries]
+[schematic_editor]
+version=1
+PageLayoutDescrFile=
+PlotDirectoryName=
+SubpartIdSeparator=0
+SubpartFirstId=65
+NetFmtName=
+SpiceForceRefPrefix=0
+SpiceUseNetNumbers=0
+LabSize=50
+[general]
+version=1

OV7670_Image_Sensor/pcb/pcb.sch

@@ -0,0 +1,273 @@
+EESchema Schematic File Version 4
+EELAYER 26 0
+EELAYER END
+$Descr USLetter 11000 8500
+encoding utf-8
+Sheet 1 1
+Title ""
+Date ""
+Rev ""
+Comp ""
+Comment1 ""
+Comment2 ""
+Comment3 ""
+Comment4 ""
+$EndDescr
+$Comp
+L Connector_Generic:Conn_02x09_Odd_Even J1
+U 1 1 5E82D94D
+P 3450 3900
+F 0 "J1" H 2975 5075 50  0000 C CNN
+F 1 "Conn_02x09_Counter_Clockwise" H 2850 5200 50  0000 C CNN
+F 2 "Connector_PinHeader_2.54mm:PinHeader_2x09_P2.54mm_Vertical" H 3450 3900 50  0001 C CNN
+F 3 "~" H 3450 3900 50  0001 C CNN
+	1    3450 3900
+	1    0    0    -1  
+$EndComp
+Text Notes 3450 3025 0    50   ~ 0
+OV7670
+$Comp
+L power:+3V3 #PWR0101
+U 1 1 5E82DA8E
+P 3250 3500
+F 0 "#PWR0101" H 3250 3350 50  0001 C CNN
+F 1 "+3V3" H 3265 3673 50  0000 C CNN
+F 2 "" H 3250 3500 50  0001 C CNN
+F 3 "" H 3250 3500 50  0001 C CNN
+	1    3250 3500
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR0102
+U 1 1 5E82DAF2
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+F 0 "#PWR0102" H 4150 3250 50  0001 C CNN
+F 1 "GND" H 4155 3327 50  0000 C CNN
+F 2 "" H 4150 3500 50  0001 C CNN
+F 3 "" H 4150 3500 50  0001 C CNN
+	1    4150 3500
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	4150 3500 3750 3500
+Text Label 3250 3600 2    50   ~ 0
+SIOC
+Text Label 3250 3700 2    50   ~ 0
+VSYNC
+Text Label 3250 3800 2    50   ~ 0
+PCLK
+Text Label 3750 3600 0    50   ~ 0
+SIOD
+Text Label 3750 3800 0    50   ~ 0
+XCLK
+Text Label 3250 4300 2    50   ~ 0
+RESET
+Text Label 3750 4300 0    50   ~ 0
+PWDN
+Text Label 3750 4200 0    50   ~ 0
+D0
+Text Label 3750 4100 0    50   ~ 0
+D2
+Text Label 3750 4000 0    50   ~ 0
+D4
+Text Label 3750 3900 0    50   ~ 0
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+Text Label 3250 4200 2    50   ~ 0
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+Text Label 3250 4100 2    50   ~ 0
+D3
+Text Label 3250 4000 2    50   ~ 0
+D5
+Text Label 3250 3900 2    50   ~ 0
+D7
+Text Label 3750 3700 0    50   ~ 0
+NC-16
+$Comp
+L MCU_Module:Arduino_UNO_R3 A1
+U 1 1 5E82DE4B
+P 6450 3875
+F 0 "A1" H 5850 5175 50  0000 C CNN
+F 1 "Arduino_UNO_R3" H 5875 5000 50  0000 C CNN
+F 2 "Module:Arduino_UNO_R3" H 6600 2825 50  0001 L CNN
+F 3 "https://www.arduino.cc/en/Main/arduinoBoardUno" H 6250 4925 50  0001 C CNN
+	1    6450 3875
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR0103
+U 1 1 5E82E0BD
+P 6550 4975
+F 0 "#PWR0103" H 6550 4725 50  0001 C CNN
+F 1 "GND" H 6555 4802 50  0000 C CNN
+F 2 "" H 6550 4975 50  0001 C CNN
+F 3 "" H 6550 4975 50  0001 C CNN
+	1    6550 4975
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	6550 4975 6450 4975
+Connection ~ 6550 4975
+Connection ~ 6450 4975
+Wire Wire Line
+	6450 4975 6350 4975
+$Comp
+L power:+3V3 #PWR0104
+U 1 1 5E82E1A2
+P 6550 2875
+F 0 "#PWR0104" H 6550 2725 50  0001 C CNN
+F 1 "+3V3" H 6565 3048 50  0000 C CNN
+F 2 "" H 6550 2875 50  0001 C CNN
+F 3 "" H 6550 2875 50  0001 C CNN
+	1    6550 2875
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:+5V #PWR0105
+U 1 1 5E82E2E4
+P 6650 2875
+F 0 "#PWR0105" H 6650 2725 50  0001 C CNN
+F 1 "+5V" H 6775 3025 50  0000 C CNN
+F 2 "" H 6650 2875 50  0001 C CNN
+F 3 "" H 6650 2875 50  0001 C CNN
+	1    6650 2875
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	3750 3600 4450 3600
+$Comp
+L Device:R R2
+U 1 1 5E82E56A
+P 4450 3450
+F 0 "R2" H 4520 3496 50  0000 L CNN
+F 1 "10K" H 4520 3405 50  0000 L CNN
+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 4380 3450 50  0001 C CNN
+F 3 "~" H 4450 3450 50  0001 C CNN
+	1    4450 3450
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:+3V3 #PWR0106
+U 1 1 5E82E68F
+P 4450 3300
+F 0 "#PWR0106" H 4450 3150 50  0001 C CNN
+F 1 "+3V3" H 4465 3473 50  0000 C CNN
+F 2 "" H 4450 3300 50  0001 C CNN
+F 3 "" H 4450 3300 50  0001 C CNN
+	1    4450 3300
+	1    0    0    -1  
+$EndComp
+Text Label 6950 4275 0    50   ~ 0
+SIOD
+$Comp
+L Device:R R1
+U 1 1 5E82EAE2
+P 2700 3450
+F 0 "R1" H 2770 3496 50  0000 L CNN
+F 1 "10K" H 2770 3405 50  0000 L CNN
+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 2630 3450 50  0001 C CNN
+F 3 "~" H 2700 3450 50  0001 C CNN
+	1    2700 3450
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:+3V3 #PWR0107
+U 1 1 5E82EAE8
+P 2700 3300
+F 0 "#PWR0107" H 2700 3150 50  0001 C CNN
+F 1 "+3V3" H 2715 3473 50  0000 C CNN
+F 2 "" H 2700 3300 50  0001 C CNN
+F 3 "" H 2700 3300 50  0001 C CNN
+	1    2700 3300
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	2700 3600 3250 3600
+Text Label 6950 4375 0    50   ~ 0
+SIOC
+Text Label 5950 3475 2    50   ~ 0
+VSYNC
+Text Label 5950 4475 2    50   ~ 0
+PCLK
+$Comp
+L Device:R R3
+U 1 1 5E82F3BF
+P 5300 3725
+F 0 "R3" H 5370 3771 50  0000 L CNN
+F 1 "R680" H 5370 3680 50  0000 L CNN
+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 5230 3725 50  0001 C CNN
+F 3 "~" H 5300 3725 50  0001 C CNN
+	1    5300 3725
+	1    0    0    -1  
+$EndComp
+$Comp
+L Device:R R4
+U 1 1 5E82F408
+P 5300 4025
+F 0 "R4" H 5370 4071 50  0000 L CNN
+F 1 "R1K" H 5370 3980 50  0000 L CNN
+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 5230 4025 50  0001 C CNN
+F 3 "~" H 5300 4025 50  0001 C CNN
+	1    5300 4025
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	5300 3875 5050 3875
+Connection ~ 5300 3875
+Text Label 5050 3875 0    50   ~ 0
+XCLK
+Wire Wire Line
+	5300 3575 5950 3575
+$Comp
+L power:GND #PWR0108
+U 1 1 5E82FDF4
+P 5300 4175
+F 0 "#PWR0108" H 5300 3925 50  0001 C CNN
+F 1 "GND" H 5305 4002 50  0000 C CNN
+F 2 "" H 5300 4175 50  0001 C CNN
+F 3 "" H 5300 4175 50  0001 C CNN
+	1    5300 4175
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	3250 4300 3250 4625
+Wire Wire Line
+	3250 4625 2900 4625
+$Comp
+L power:GND #PWR0109
+U 1 1 5E8300F1
+P 3750 4300
+F 0 "#PWR0109" H 3750 4050 50  0001 C CNN
+F 1 "GND" H 3755 4127 50  0000 C CNN
+F 2 "" H 3750 4300 50  0001 C CNN
+F 3 "" H 3750 4300 50  0001 C CNN
+	1    3750 4300
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:+3V3 #PWR0110
+U 1 1 5E8301F4
+P 2900 4625
+F 0 "#PWR0110" H 2900 4475 50  0001 C CNN
+F 1 "+3V3" H 2915 4798 50  0000 C CNN
+F 2 "" H 2900 4625 50  0001 C CNN
+F 3 "" H 2900 4625 50  0001 C CNN
+	1    2900 4625
+	1    0    0    -1  
+$EndComp
+Text Label 6950 3875 0    50   ~ 0
+D0
+Text Label 6950 3975 0    50   ~ 0
+D1
+Text Label 6950 4075 0    50   ~ 0
+D2
+Text Label 6950 4175 0    50   ~ 0
+D3
+Text Label 5950 3675 2    50   ~ 0
+D4
+Text Label 5950 3775 2    50   ~ 0
+D5
+Text Label 5950 3875 2    50   ~ 0
+D6
+Text Label 5950 3975 2    50   ~ 0
+D7
+$EndSCHEMATC

OV7670_Image_Sensor/resources/arduino-ov7670-10fps

@@ -0,0 +1,838 @@
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+    <title>Tutorial: 10FPS Video with the OV7670 Module and Arduino - Circuit Journal</title>
+    <meta name="description" content='A step-by-step guide to building a circuit with the OV7670 module and an Arduino that sends live video to a 1.8 inch TFT.'/>
+    
+</head>
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+
+    <div class="container content-width-limit">
+        <div class="pt-5 pb-2"></div>
+        <div class="row idclass-page-content" data-pageScripts="app/utils/ImageSelection">
+        <div class="col">
+            <article>
+                <section>
+                    
+                    <h1 class="h2 pb-3 font-weight-bold">Tutorial: 10FPS Video with the OV7670 Module and Arduino</h1>
+
+                    <p>
+                        You can buy very cheap OV7670 camera modules from eBay or Aliexpress.
+                    </p>
+                    <p>
+                        Getting them to work with an Arduino can be quite complicated.
+                        It requires a lot of connections and precise timing on the software side.
+                    </p>
+                    <p>
+                        <strong>
+                            This article is a step-by-step guide for building all the necessary connections
+                            on a breadboard. Then you can use my example code to run a 10fps
+                            video live stream on a tiny display.
+                        </strong>
+                    </p>
+                    <p>
+                        The following video clip is a short demo of the camera in action.
+                        In this video, you see a PCB version of the same circuit presented in this article.
+                    </p>
+                    <div class="row pb-3">
+                        <div class="col-12 col-sm-8">
+                            <div class="video-container"><iframe width="560" height="315" src="https://www.youtube.com/embed/TqSY6FETuos" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe></div>
+                        </div>
+                    </div>
+
+                    <div class="pt-4"><div>
+        <p class="alert alert-secondary">
+            Disclosure: Bear in mind that some of the links in this post are affiliate
+            links and if you go through them to make a purchase I will earn a commission.
+            Keep in mind that I link these companies and their products because of their
+            quality and not because of the commission I receive from your purchases.
+            The decision is yours, and whether or not you decide to buy something is completely up to you.
+        </p>
+    </div></div>
+
+                    <p class="pt-5">
+                        <strong>
+                            To follow this tutorial, you need:
+                        </strong>
+                    </p>
+                    <ul>
+                        <li>
+                            An Arduino
+                            <a target="_blank" href="https://www.banggood.com/custlink/K33G2p0Vi5">Uno</a> or
+                            <a target="_blank" href="https://www.banggood.com/custlink/Km3KMpgt9n">Nano</a>
+                        </li>
+                        <li>
+                            <a target="_blank" href="https://www.banggood.com/custlink/DvGGUJBVcl">The OV7670 camera module (without the FIFO chip)</a>
+                        </li>
+                        <li>
+                            <a target="_blank" href="https://www.banggood.com/custlink/KGvGqre5gK">The 1.8 inch TFT module</a>
+                        </li>
+                        <li>
+                            <a target="_blank" href="https://www.banggood.com/custlink/mG3GMrBP0F">A breadboard</a>
+                        </li>
+                        <li>
+                            Two 10kΩ
+                            <a target="_blank" href="https://www.banggood.com/custlink/Dv3GqpeH1f">resistors</a>
+                            for the I<sup>2</sup>C connection to the camera
+                        </li>
+                        <li>
+                            Six pairs of 650Ω and 1kΩ
+                            <a target="_blank" href="https://www.banggood.com/custlink/Dv3GqpeH1f">resistors</a>
+                            for signal voltage dividers
+                        </li>
+                        <li>
+                            A bunch of jumper wires:
+                            <a target="_blank" href="https://www.banggood.com/custlink/Dm33UrBo8a">male to male</a>,
+                            <a target="_blank" href="https://www.banggood.com/custlink/D3GmMcBaiI">male to female</a>
+                        </li>
+
+                    </ul>
+
+                </section>
+
+
+
+
+
+                <section>
+                    
+                    <h2 class="h4 pt-5 pb-3 font-weight-bold">Video Tutorial</h2>
+
+                    <p>
+                        A step-by-step guide in video form.
+                        It has the same schematics I am using in this article.
+                    </p>
+
+                    <div class="row pb-3">
+                        <div class="col-12 col-sm-8">
+                            <div class="video-container"><iframe width="560" height="315" src="https://www.youtube.com/embed/Dp3RMb0e1eA" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe></div>
+                        </div>
+                    </div>
+
+                </section>
+
+
+                <section>
+                    
+                    <h2 class="h4 pt-5 pb-3 font-weight-bold">1. Preparing the Screen</h2>
+
+                    <p>
+                        <strong>
+                            Short the J1 connector on the back of the screen.
+                        </strong>
+                        Then the VCC pin of the display can be connected to the 3.3V pin of the Arduino board.
+                    </p>
+
+                    <div class="row pb-5 pt-3">
+                        <div class="col-12 col-sm-8 col-md-6">
+                            <picture>
+                                <source type="image/webp" srcset="/img/articles/7_arduino_OV7670_10fps/tft_j1_short.webp?v=10">
+                                <img alt="Short J1 on the back of the screen to enable 3.3V power input." style="width: 100%" src="/img/articles/7_arduino_OV7670_10fps/tft_j1_short.jpg?v=10">
+                            </picture>
+                        </div>
+                    </div>
+
+                    <p>
+                        When I started experimenting with the 1.8 inch TFT,
+                        I had faint vertical stripes going across the screen.
+                        By default, the screen is configured to be powered by 5V,
+                        but internally it operates at 3.3V levels.
+                        I was able to get rid of those ghosting lines by
+                        using 3.3V data signals (with voltage dividers) and switching the power input over to 3.3V.
+                    </p>
+
+                    <div class="row pb-5 pt-3">
+                        <div class="col-12 col-sm-8 col-md-6">
+                            <picture>
+                                <source type="image/webp" srcset="/img/articles/7_arduino_OV7670_10fps/tft_ghosting.webp?v=10">
+                                <img alt="Ghosting effect on the 1.8 inch TFT module." style="width: 100%" src="/img/articles/7_arduino_OV7670_10fps/tft_ghosting.jpg?v=10">
+                            </picture>
+                        </div>
+                    </div>
+
+                </section>
+
+
+                <section>
+                    
+                    <h2 class="h4 pt-5 pb-3 font-weight-bold">2. Connecting the 1.8 Inch TFT to Arduino</h2>
+
+                    <p>
+                        The input pins of the 1.8 inch TFT screen are not 5V tolerant.
+                        You have to convert the Arduino 5V signals to 3V.
+                        The easiest way to achieve that is to put voltage dividers on the signal wires.
+                    </p>
+
+                    <div class="row pb-5 pt-3">
+                        <div class="col-6 col-sm-4 col-md-3">
+                            <picture>
+                                <img alt="Voltage divider from 5V to 3V" style="width: 100%" src="/img/articles/7_arduino_OV7670_10fps/voltage_divider.png?v=10">
+                            </picture>
+                        </div>
+                    </div>
+
+                    <p>
+                        The full schematic for the connections looks like a rat's nest
+                        and is a bit hard to follow.
+                        I have divided it into steps to make it easier.
+                        Click on the buttons to switch between the schematics.
+                    </p>
+
+                    <div class="image-selection">
+                        <div class="row py-4">
+                            <div class="col-12 col-md pr-md-1 py-1">
+                                <button class="btn btn-article idclass-select-button text-nowrap active" style="width: 100%" data-u="u0">Schematic</button>
+                            </div>
+                            <div class="col-4 col-md px-md-1 py-1">
+                                <button class="btn btn-article idclass-select-button text-nowrap" style="width: 100%;" data-u="u1">Step 1</button>
+                            </div>
+                            <div class="col-4 col-md px-md-1 py-1">
+                                <button class="btn btn-article idclass-select-button text-nowrap" style="width: 100%" data-u="u2">Step 2</button>
+                            </div>
+                            <div class="col-4 col-md px-md-1 py-1">
+                                <button class="btn btn-article idclass-select-button text-nowrap" style="width: 100%" data-u="u3">Step 3</button>
+                            </div>
+                            <div class="col-4 col-md px-md-1 py-1">
+                                <button class="btn btn-article idclass-select-button text-nowrap" style="width: 100%" data-u="u4">Step 4</button>
+                            </div>
+                            <div class="col-4 col-md px-md-1 py-1">
+                                <button class="btn btn-article idclass-select-button text-nowrap" style="width: 100%" data-u="u5">Step 5</button>
+                            </div>
+                            <div class="col-4 col-md pl-md-1 py-1">
+                                <button class="btn btn-article idclass-select-button text-nowrap" style="width: 100%" data-u="u6">Step 6</button>
+                            </div>
+                        </div>
+
+                        <div class="row pb-5">
+                            <div class="col-12">
+                                <picture>
+                                    <source type="image/webp"
+                                            srcset="/img/articles/7_arduino_OV7670_10fps/screen_pins_all_1_6.webp?v=10"
+
+                                            class="idclass-image-source"
+
+                                            data-u0="/img/articles/7_arduino_OV7670_10fps/screen_pins_all_1_6.webp?v=10"
+
+                                            data-u1="/img/articles/7_arduino_OV7670_10fps/screen_pins_1.webp?v=10"
+
+                                            data-u2="/img/articles/7_arduino_OV7670_10fps/screen_pins_2.webp?v=10"
+
+                                            data-u3="/img/articles/7_arduino_OV7670_10fps/screen_pins_3.webp?v=10"
+
+                                            data-u4="/img/articles/7_arduino_OV7670_10fps/screen_pins_4.webp?v=10"
+
+                                            data-u5="/img/articles/7_arduino_OV7670_10fps/screen_pins_5.webp?v=10"
+
+                                            data-u6="/img/articles/7_arduino_OV7670_10fps/screen_pins_6.webp?v=10"
+                                    >
+                                    <img alt="Schematic for connecting an Arduino to the to 1.8 inch TFT." style="width: 100%"
+                                         src="/img/articles/7_arduino_OV7670_10fps/screen_pins_all_1_6.jpg?v=10"
+
+                                         class="idclass-image-source"
+
+                                         data-u0="/img/articles/7_arduino_OV7670_10fps/screen_pins_all_1_6.jpg?v=10"
+
+                                         data-u1="/img/articles/7_arduino_OV7670_10fps/screen_pins_1.jpg?v=10"
+
+                                         data-u2="/img/articles/7_arduino_OV7670_10fps/screen_pins_2.jpg?v=10"
+
+                                         data-u3="/img/articles/7_arduino_OV7670_10fps/screen_pins_3.jpg?v=10"
+
+                                         data-u4="/img/articles/7_arduino_OV7670_10fps/screen_pins_4.jpg?v=10"
+
+                                         data-u5="/img/articles/7_arduino_OV7670_10fps/screen_pins_5.jpg?v=10"
+
+                                         data-u6="/img/articles/7_arduino_OV7670_10fps/screen_pins_6.jpg?v=10"
+                                    >
+                                </picture>
+                            </div>
+                        </div>
+                    </div>
+
+                    <p>
+                        <strong>
+                            Add a Voltage divider to every connection made in steps 1 to 5.
+                        </strong>
+                    </p>
+
+                    <p class="pt-4">
+                        <strong>
+                            Step 1. Connect the screen pin 1 (RST) to the Arduino pin 10.
+                        </strong>
+                    </p>
+                    <p>
+                        This is the reset pin.
+                        It is used by the Adafruit library when initializing the screen.
+                    </p>
+
+                    <p class="pt-4">
+                        <strong>
+                            Step 2. Connect the screen pin 2 (CS) to the Arduino pin 9.
+                        </strong>
+                    </p>
+                    <p>
+                        Chip select pin.
+                        Signal LOW – the screen is active and listening to the SPI port.
+                        Signal HIGH – the screen ignores all the data on the SPI wire.
+                    </p>
+
+                    <p class="pt-4">
+                        <strong>
+                            Step 3. Connect the screen pin 3 (D/C) to the Arduino pin 8.
+                        </strong>
+                    </p>
+                    <p>
+                        Data/Configuration pin.
+                        You can send either pixel data (image to be displayed) or configuration data (color format, screen orientation, etc.).
+                        Input HIGH is for sending pixel data and LOW for sending configuration.
+                    </p>
+
+                    <p class="pt-4">
+                        <strong>
+                            Step 4. Connect the screen pin 4 (DIN) to the Arduino pin 11.
+                        </strong>
+                    </p>
+                    <p>
+                        SPI data input pin. The screen is listening to the SPI port if the CS pin is LOW.
+                    </p>
+
+                    <p class="pt-4">
+                        <strong>
+                            Step 5. Connect the screen pin 5 (CLK) to the Arduino pin 13.
+                        </strong>
+                    </p>
+                    <p>
+                        SPI clock pin. The screen is listening to the SPI port if the CS pin is LOW.
+                    </p>
+
+                    <p class="pt-4">
+                        <strong>
+                            Step 6. Connect the screen power pins. The pins 6 (VCC) and 7 (BL) to the Arduino 3.3V pin.
+                            The screen pin 8 (GND) to the Arduino GND pin.
+                        </strong>
+                    </p>
+                    <p>
+                        Pin 7 is the signal to activate the backlight.
+                        We connect it to the 3.3V, so the display is always lit.
+                        The Arduino could control it, but in this project,
+                        we need all the other Arduino pins for the camera connections.
+                    </p>
+                    <p>
+                        Pins 6 and 8 are power pins for the screen.
+                        Since we shorted the J1 connector, we need to use 3.3V input for the VCC.
+                    </p>
+
+                </section>
+
+
+                <section>
+                    
+                    <h2 class="h4 pt-5 pb-3 font-weight-bold">3. Test the Screen Connections</h2>
+
+                    <p>
+                        You should test the screen wiring before continuing with connecting the camera.
+                    </p>
+
+                    <p class="pt-4">
+                        <strong>
+                            1. Download the code of my LiveOV7670 project:
+                        </strong><br>
+                        <a href="https://github.com/indrekluuk/LiveOV7670">https://github.com/indrekluuk/LiveOV7670</a>
+                    </p>
+                    <p>
+                        Click on the green "Clone or download" button and then "Download ZIP."
+                    </p>
+
+                    <div class="row pb-5 pt-3">
+                        <div class="col-12">
+                            <picture>
+                                <source type="image/webp" srcset="/img/articles/7_arduino_OV7670_10fps/download_ov7670_project.webp?v=10">
+                                <img alt="Short J1 on the back of the screen to enable 3.3V power input." style="width: 100%" src="/img/articles/7_arduino_OV7670_10fps/download_ov7670_project.jpg?v=10">
+                            </picture>
+                        </div>
+                    </div>
+
+                    <p>
+                        Extract the downloaded ZIP file.
+                    </p>
+
+                    <p class="pt-4">
+                        <strong>
+                            2. Copy the the two libraries "LiveOV7670Library" and "Adafruit_GFX_Library"
+                            from "src/lib" to your Arduino "libraries" folder
+                        </strong>
+                    </p>
+                    <div>On Windows:</div>
+                    <pre class="pl-4 text-muted">C:\Users\&lt;username&gt;\Documents\Arduino\libraries</pre>
+                    <div>On Mac:</div>
+                    <pre class="pl-4 text-muted">/Users/&lt;username&gt;/Documents/Arduino/libraries</pre>
+
+                    <p>
+                        "LiveOV7670Library" contains the code that communicates with the OV7670 camera module.
+                    </p>
+                    <p>
+                       "Adafruit_GFX_Library" is a dependency of the "Adafruit-ST7735" screen library.
+                        In this project, I am using a modified version of the Adafruit's ST7735 library
+                        – "Adafruit_ST7735_mod.h" and "Adafruit_ST7735_mod.cpp" in the "src/LiveOV7670" folder.
+                        The original was too slow.
+                        To get it faster, I had to cut some corners in the method that sends pixel data to the display.
+                    </p>
+
+                    <p class="pt-4">
+                        <strong>
+                            3. Open "src/LiveOV7670/LiveOV7670.ino" and load it into your Arduino.
+                        </strong>
+                    </p>
+                    <p>
+                        This project takes advantage of some of the C++11 features.
+                        C++11 is enabled by default since Arduino IDE version 1.6.6.
+                        If, for some reason, you have an older version, then you should either
+                        upgrade or enable C++11 in the Arduino IDE configuration file.
+                    </p>
+
+                    <p class="pt-4">
+                        <strong>
+                            4. If everything is connected correctly, then the screen should flash red.
+                        </strong>
+                    </p>
+
+                    <div class="row pb-5 pt-3">
+                        <div class="col-12 col-sm-8 col-md-6">
+                            <picture>
+                                <source type="image/webp" srcset="/img/articles/7_arduino_OV7670_10fps/tft_test.webp?v=10">
+                                <img alt="First OV7670 connections test for the TFT." style="width: 100%" src="/img/articles/7_arduino_OV7670_10fps/tft_test.jpg?v=10">
+                            </picture>
+                        </div>
+                    </div>
+
+                    <p>
+                        The solid red color means that the code wasn't able to detect the camera module.
+                        But since we see the color, we can be sure that the screen wiring is OK.
+                    </p>
+                    <p>
+                        If you do not see the red image, then check your wiring,
+                        and make sure that you have shorted the J1 connector on the back of the screen.
+                    </p>
+
+                </section>
+
+
+                <section>
+                    
+                    <h2 class="h4 pt-5 pb-3 font-weight-bold">4. First Part of the Camera Connections – Power It Up</h2>
+
+                    <p>
+                        We will do the camera wiring in two phases.
+                        In this chapter, we are going to make all the necessary connections
+                        to get the camera running and configured by the Arduino.
+                    </p>
+
+                    <div class="image-selection">
+                        <div class="row py-5">
+                            <div class="col-12 col-md pr-md-1 py-1">
+                                <button class="btn btn-article idclass-select-button text-nowrap active" style="width: 100%" data-u="u0">Schematic</button>
+                            </div>
+                            <div class="col-4 col-md px-md-1 py-1">
+                                <button class="btn btn-article idclass-select-button text-nowrap" style="width: 100%;" data-u="u1">Step 1</button>
+                            </div>
+                            <div class="col-4 col-md px-md-1 py-1">
+                                <button class="btn btn-article idclass-select-button text-nowrap" style="width: 100%" data-u="u2">Step 2</button>
+                            </div>
+                            <div class="col-4 col-md px-md-1 py-1">
+                                <button class="btn btn-article idclass-select-button text-nowrap" style="width: 100%" data-u="u3">Step 3</button>
+                            </div>
+                            <div class="col-4 col-md px-md-1 py-1">
+                                <button class="btn btn-article idclass-select-button text-nowrap" style="width: 100%" data-u="u4">Step 4</button>
+                            </div>
+                            <div class="col-4 col-md px-md-1 py-1">
+                                <button class="btn btn-article idclass-select-button text-nowrap" style="width: 100%" data-u="u5">Step 5</button>
+                            </div>
+                            <div class="col-4 col-md pl-md-1 py-1">
+                                <button class="btn btn-article idclass-select-button text-nowrap" style="width: 100%" data-u="u6">Step 6</button>
+                            </div>
+                        </div>
+
+                        <div class="row pb-5">
+                            <div class="col-12">
+                                <picture>
+                                    <source type="image/webp"
+                                            srcset="/img/articles/7_arduino_OV7670_10fps/camera_pins_all_1_6.webp?v=10"
+
+                                            class="idclass-image-source"
+
+                                            data-u0="/img/articles/7_arduino_OV7670_10fps/camera_pins_all_1_6.webp?v=10"
+
+                                            data-u1="/img/articles/7_arduino_OV7670_10fps/camera_pins_1.webp?v=10"
+
+                                            data-u2="/img/articles/7_arduino_OV7670_10fps/camera_pins_2.webp?v=10"
+
+                                            data-u3="/img/articles/7_arduino_OV7670_10fps/camera_pins_3.webp?v=10"
+
+                                            data-u4="/img/articles/7_arduino_OV7670_10fps/camera_pins_4.webp?v=10"
+
+                                            data-u5="/img/articles/7_arduino_OV7670_10fps/camera_pins_5.webp?v=10"
+
+                                            data-u6="/img/articles/7_arduino_OV7670_10fps/camera_pins_6.webp?v=10"
+                                    >
+                                    <img alt="Schematic for connecting an Arduino to the OV7670 module." style="width: 100%"
+                                         src="/img/articles/7_arduino_OV7670_10fps/camera_pins_all_1_6.jpg?v=10"
+
+                                         class="idclass-image-source"
+
+                                         data-u0="/img/articles/7_arduino_OV7670_10fps/camera_pins_all_1_6.jpg?v=10"
+
+                                         data-u1="/img/articles/7_arduino_OV7670_10fps/camera_pins_1.jpg?v=10"
+
+                                         data-u2="/img/articles/7_arduino_OV7670_10fps/camera_pins_2.jpg?v=10"
+
+                                         data-u3="/img/articles/7_arduino_OV7670_10fps/camera_pins_3.jpg?v=10"
+
+                                         data-u4="/img/articles/7_arduino_OV7670_10fps/camera_pins_4.jpg?v=10"
+
+                                         data-u5="/img/articles/7_arduino_OV7670_10fps/camera_pins_5.jpg?v=10"
+
+                                         data-u6="/img/articles/7_arduino_OV7670_10fps/camera_pins_6.jpg?v=10"
+                                    >
+                                </picture>
+                            </div>
+                        </div>
+                    </div>
+
+                    <p class="pt-4">
+                        <strong>
+                            Step 1. Make a voltage divider from the Arduino pin 3 to the XCLK pin of the camera.
+                        </strong>
+                    </p>
+                    <p>
+                        Similarly to the screen, the camera module is not 5V tolerant.
+                        This is the only connection that needs a voltage divider on the camera side.
+                        It's the single digital output signal from Arduino to the OV7670 module
+                        (all the other ones are inputs for the Arduino).
+                    </p>
+                    <p>
+                        XCLK is the input clock that makes the camera run.
+                        The maximum frequency that Arduino can put out is 8Mhz.
+                        For full speed, the camera module needs 30Mhz,
+                        but eight is enough to display ten frames per second image.
+                    </p>
+
+                    <p class="pt-4">
+                        <strong>
+                            Step 2. Make the I<sup>2</sup>C connections.
+                            Arduino pin A5 to SIOC and Arduino pin A4 to SIOD.
+                            Then add a 10k pull-up resistors to 3.3V to both of the wires
+                            (A5 to 10k to 3.3V, A4 to 10k to 3.3V).
+                        </strong>
+                    </p>
+                    <p>
+                        I<sup>2</sup>C is necessary for sending configuration data to the camera
+                        (resolution, pixel format, etc.).
+                    </p>
+
+                    <p class="pt-4">
+                        <strong>
+                            Step 3. VSYNC to Arduino pin 2.
+                        </strong>
+                    </p>
+                    <p>
+                        It's a 3.3V signal from the camera to the Arduino.
+                        This connection can be made directly without a voltage divider.
+                    </p>
+                    <p>
+                        We need vertical sync to know when a new frame begins.
+                        Otherwise, it looks to Arduino like a constant pixel stream with no start or end.
+                    </p>
+
+                    <p class="pt-4">
+                        <strong>
+                            Step 4. PCLK to Arduino pin 12.
+                        </strong>
+                    </p>
+                    <p>
+                        This is also a 3.3V signal from the camera to the Arduino
+                        and can be connected directly.
+                    </p>
+                    <p>
+                        Pixel cock is necessary for knowing the exact time when to read pixel data.
+                    </p>
+
+                    <p class="pt-4">
+                        <strong>
+                            Step 5. Connect power to the camera. From Arduino 3.3V pin to the camera's 3.3V input and
+                            from Arduino GND pin to the camera's GND.
+                        </strong>
+                    </p>
+
+                    <p class="pt-4">
+                        <strong>
+                            Step 6. Connect the camera's RESET pin to 3.3V and PWDN to GND.
+                        </strong>
+                    </p>
+                    <p>
+                        Reset pin could be used to reset the camera module and power down to turn it off.
+                        But since we don't have any left-over pins, we let it run all the time.
+                    </p>
+
+                </section>
+
+
+                <section>
+                    
+                    <h2 class="h4 pt-5 pb-3 font-weight-bold">5. Validate That the Camera is Running</h2>
+
+                    <p>
+                        This is the second test before we get to the actual images from the camera.
+                    </p>
+                    <p>
+                        When you start the Arduino again, then it should flash a green screen.
+                        This means that the LiveOV7670 library was able to detect and configure the camera successfully.
+                    </p>
+
+                    <div class="row pb-5 pt-3">
+                        <div class="col-12 col-sm-8 col-md-6">
+                            <picture>
+                                <source type="image/webp" srcset="/img/articles/7_arduino_OV7670_10fps/camera_conf_test.webp?v=10">
+                                <img alt="First connection test with the OV7670 module." style="width: 100%" src="/img/articles/7_arduino_OV7670_10fps/camera_conf_test.jpg?v=10">
+                            </picture>
+                        </div>
+                    </div>
+
+                    <p>
+                        You can't see any images yet since the pixel data pins are not connected.
+                    </p>
+
+                    <p>
+                        If you still see the red screen, then check the wiring.
+                        Make sure that the XCLK wire isn't too long.
+                        The square wave of the input clock signal to the camera may become too deformed
+                        for it to operate correctly.
+                    </p>
+
+                </section>
+
+
+                <section>
+                    
+                    <h2 class="h4 pt-5 pb-3 font-weight-bold">6. Second Part of the Camera Connections – Pixel Data Pins</h2>
+
+                    <p>
+                        Now we can finish the camera wiring by connecting pixel data inputs.
+                        Pixels are streamed from the camera one byte at the time.
+                        Each pixel consists of two bytes that are read sequentially.
+                    </p>
+
+                    <div class="image-selection">
+                        <div class="row py-5">
+                            <div class="col-12 col-sm pr-sm-1 py-1">
+                                <button class="btn btn-article idclass-select-button text-nowrap active" style="width: 100%" data-u="u0">Schematic</button>
+                            </div>
+                            <div class="col-6 col-sm px-sm-1 py-1">
+                                <button class="btn btn-article idclass-select-button text-nowrap" style="width: 100%;" data-u="u1">Step 1</button>
+                            </div>
+                            <div class="col-6 col-sm pl-sm-1 py-1">
+                                <button class="btn btn-article idclass-select-button text-nowrap" style="width: 100%" data-u="u2">Step 2</button>
+                            </div>
+                        </div>
+
+                        <div class="row pb-5">
+                            <div class="col-12">
+                                <picture>
+                                    <source type="image/webp"
+                                            srcset="/img/articles/7_arduino_OV7670_10fps/camera_pins_all_7_8.webp?v=10"
+
+                                            class="idclass-image-source"
+
+                                            data-u0="/img/articles/7_arduino_OV7670_10fps/camera_pins_all_7_8.webp?v=10"
+
+                                            data-u1="/img/articles/7_arduino_OV7670_10fps/camera_pins_7.webp?v=10"
+
+                                            data-u2="/img/articles/7_arduino_OV7670_10fps/camera_pins_8.webp?v=10"
+                                    >
+                                    <img alt="Schematic for connecting an Arduino to the OV7670 module." style="width: 100%"
+                                         src="/img/articles/7_arduino_OV7670_10fps/camera_pins_all_7_8.jpg?v=10"
+
+                                         class="idclass-image-source"
+
+                                         data-u0="/img/articles/7_arduino_OV7670_10fps/camera_pins_all_7_8.jpg?v=10"
+
+                                         data-u1="/img/articles/7_arduino_OV7670_10fps/camera_pins_7.jpg?v=10"
+
+                                         data-u2="/img/articles/7_arduino_OV7670_10fps/camera_pins_8.jpg?v=10"
+                                    >
+                                </picture>
+                            </div>
+                        </div>
+                    </div>
+
+                    <p class="pt-4">
+                        <strong>
+                            Step 1. Connect Camera's D0 to D3 to the Arduino pins A0 to A3.
+                        </strong>
+                    </p>
+                    <p>
+                        These are the lower four bits of a pixel byte.
+                    </p>
+
+                    <p class="pt-4">
+                        <strong>
+                            Step 2. Connect Camera's D4 to D7 to the Arduino pins 4 to 7.
+                        </strong>
+                    </p>
+                    <p>
+                        These are the higher four bits of a pixel byte.
+                    </p>
+
+
+                </section>
+
+
+                <section>
+                    
+                    <h2 class="h4 pt-5 pb-3 font-weight-bold">7. Done!</h2>
+
+                    <p>
+                        Now you can power up your Arduino again.
+                        It starts with a green image like in the previous test.
+                        Then you should see a live video streamed from the camera to the display.
+                    </p>
+
+                    <div class="row pb-5 pt-3">
+                        <div class="col-12 col-sm-8 col-md-6">
+                            <picture>
+                                <source type="image/webp" srcset="/img/articles/7_arduino_OV7670_10fps/camera_full_test.webp?v=10">
+                                <img alt="10fps live video from the OV7670 module to the 1.8 inch TFT display." style="width: 100%" src="/img/articles/7_arduino_OV7670_10fps/camera_full_test.jpg?v=10">
+                            </picture>
+                        </div>
+                    </div>
+
+
+                </section>
+
+
+            </article>
+        </div>
+    </div>
+    </div>
+
+    <div style="height: 10rem"></div>
+
+    <footer class="site-footer">
+        <div class="container content-width-limit">
+            <div class="row pt-3">
+                <div class="col">
+                    <div class="font-weight-light">
+                    </div>
+                    <br>
+                    <br>
+                    <br>
+                    <div style="color: #555555">
+                        <span>Version</span>: <span>9a4cd35</span>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </footer>
+
+    
+    <script src="/scripts/lib/jquery/jquery.min.js?v=10"></script>
+    <script src="/scripts/lib/popper/popper.min.js?v=10"></script>
+    <script src="/scripts/lib/bootstrap/js/bootstrap.min.js?v=10"></script>
+    <script src="/scripts/lib/require/require.js?v=10"></script>
+
+    
+    <script type="text/javascript">
+        // force javascript re-load if code changes.
+        var jsVersion = "9a4cd35";
+        var jsLibVersion = "10";
+
+        requirejs.config({
+            baseUrl: 'scripts',
+            urlArgs: function(id, url) {
+                var v = id.startsWith('app') ? jsVersion : jsLibVersion;
+                return (url.indexOf('?') === -1 ? '?' : '&') + 'v=' + v;
+            }
+        });
+
+        requirejs(["app/main"], function(MainPage) {
+            MainPage.initMainPage();
+        });
+    </script>
+
+</body>
+</html>

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Prototyping_Board/docs/2.tex

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+
+\documentclass[11pt]{article}
+%Gummi|065|=)
+\usepackage{graphicx}
+\usepackage{caption}
+\usepackage{xcolor}
+\usepackage[vcentering,dvips]{geometry}
+\geometry{papersize={6in,9in},total={4.5in,6.8in}}
+\title{\textbf{Proto Board}}
+\author{Steak Electronics}
+\date{}
+\begin{document}
+
+\maketitle
+
+\tableofcontents
+\textcolor{green!60!blue!70}{
+  \section{Improving the Prototype Board}}
+  What can I do to make this better? I've built the first batch. Let's outline what needs to be changes.
+
+ \textcolor{green!60!blue!70}{ \subsection{Changes}}
+  \begin{itemize}
+    \item Line up Power and GND rails with Perf board section.
+  \end{itemize}
+  This will allow use of a dip switch on the perf area, then into the GND rail for example. Also check that you can place a DIP part on the perf and PWR and GND section.
+\begin{itemize}
+\item Simplify the Power connection jumper / 0 ohm resistor links.
+  \end{itemize}
+I was goingn to leave the 0 ohm smd resistor jumper off the top barrel plug and make it unfused only, however, this will eliminate the ability to use multiple power supplies with barrel plugs, and keep them all fused... Trade offs.
+Instead, I must use the existing 0.1'' headers for connections to something like an arduino without a fuse.
+
+\begin{itemize}
+\item Output LEDs
+  \end{itemize}
+  LEDs are useful for indication of power, or other signals. Need some 0805, R then LED footprints.
+
+  \begin{itemize}
+\item POT
+  \end{itemize}
+  A section for a potentiometer. This board is starting to look like a 200 and 1 kids electronic box.
+
+   \begin{itemize}
+\item Dedicated Perf only board
+   \end{itemize}
+   I am going to want a board for 74 logic, or lots of dip packages
+   perhaps have a similar board that is SOIC size only.
+   This is a dedicated board, meant to be used as an accompaniement to above board, when you need more through hole space. Will keep at similar size to above board.
+\end{document}
+

Prototyping_Board/docs/2.tex~

@@ -0,0 +1,42 @@
+
+\documentclass[11pt]{article}
+%Gummi|065|=)
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+\usepackage{caption}
+\usepackage{xcolor}
+\usepackage[vcentering,dvips]{geometry}
+\geometry{papersize={6in,9in},total={4.5in,6.8in}}
+\title{\textbf{Proto Board}}
+\author{Steak Electronics}
+\date{}
+\begin{document}
+
+\maketitle
+
+\tableofcontents
+\textcolor{green!60!blue!70}{
+  \section{Improving the Prototype Board}}
+  What can I do to make this better? I've built the first batch. Let's outline what needs to be changes.
+
+ \textcolor{green!60!blue!70}{ \subsection{Changes}}
+  \begin{itemize}
+    \item Line up Power and GND rails with Perf board section.
+  \end{itemize}
+  This will allow use of a dip switch on the perf area, then into the GND rail for example. Also check that you can place a DIP part on the perf and PWR and GND section.
+\begin{itemize}
+\item Simplify the Power connection jumper / 0 ohm resistor links.
+  \end{itemize}
+I was goingn to leave the 0 ohm smd resistor jumper off the top barrel plug and make it unfused only, however, this will eliminate the ability to use multiple power supplies with barrel plugs, and keep them all fused... Trade offs.
+Instead, I must use the existing 0.1'' headers for connections to something like an arduino without a fuse.
+
+\begin{itemize}
+\item Output LEDs
+  \end{itemize}
+  LEDs are useful for indication of power, or other signals. Need some 0805, R then LED footprints.
+
+  \begin{itemize}
+\item POT
+  \end{itemize}
+ A section for a potentiometer. This board is starting to look like a 200 and 1 kids electronic box.
+\end{document}
+

Prototyping_Board/docs/2.toc

@@ -0,0 +1,2 @@
+\contentsline {section}{\numberline {1}Improving the Prototype Board}{1}
+\contentsline {subsection}{\numberline {1.1}Changes}{1}

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Prototyping_Board/docs/3.tex

@@ -0,0 +1,49 @@
+
+\documentclass[11pt]{article}
+%Gummi|065|=)
+\usepackage{graphicx}
+\usepackage{caption}
+\usepackage{xcolor}
+\usepackage[vcentering,dvips]{geometry}
+\geometry{papersize={6in,9in},total={4.5in,6.8in}}
+\title{\textbf{Proto Board}}
+\author{Steak Electronics}
+\date{}
+\begin{document}
+
+\maketitle
+
+\tableofcontents
+\textcolor{green!60!blue!70}{
+  \section{Improving the Prototype Board}}
+  What can I do to make this better? I've built the first batch. Let's outline what needs to be changes.
+
+ \textcolor{green!60!blue!70}{ \subsection{Changes}}
+  \begin{itemize}
+    \item Line up Power and GND rails with Perf board section.
+  \end{itemize}
+  This will allow use of a dip switch on the perf area, then into the GND rail for example. Also check that you can place a DIP part on the perf and PWR and GND section.
+\begin{itemize}
+\item Simplify the Power connection jumper / 0 ohm resistor links.
+  \end{itemize}
+I was goingn to leave the 0 ohm smd resistor jumper off the top barrel plug and make it unfused only, however, this will eliminate the ability to use multiple power supplies with barrel plugs, and keep them all fused... Trade offs.
+Instead, I must use the existing 0.1'' headers for connections to something like an arduino without a fuse.
+
+\begin{itemize}
+\item Output LEDs
+  \end{itemize}
+  LEDs are useful for indication of power, or other signals. Need some 0805, R then LED footprints.
+
+  \begin{itemize}
+\item POT
+  \end{itemize}
+  A section for a potentiometer. This board is starting to look like a 200 and 1 kids electronic box.
+
+   \begin{itemize}
+\item Dedicated Perf only board
+   \end{itemize}
+   I am going to want a board for 74 logic, or lots of dip packages
+   perhaps have a similar board that is SOIC size only.
+   This is a dedicated board, meant to be used as an accompaniement to above board, when you need more through hole space. Will keep at similar size to above board.
+\end{document}
+

Prototyping_Board/docs/3.toc

@@ -0,0 +1,2 @@
+\contentsline {section}{\numberline {1}Improving the Prototype Board}{1}
+\contentsline {subsection}{\numberline {1.1}Changes}{1}

Prototyping_Board/footprints/PinHeader_1x01_P1.27mm_Vertical_EDIT.kicad_mod

@@ -0,0 +1,16 @@
+(module Connector_PinHeader_1.27mm:PinHeader_1x01_P1.27mm_Vertical (layer F.Cu) (tedit 5E881D08)
+  (descr "Through hole straight pin header, 1x01, 1.27mm pitch, single row")
+  (tags "Through hole pin header THT 1x01 1.27mm single row")
+  (fp_text reference REF** (at 0 -1.695) (layer F.SilkS)
+    (effects (font (size 1 1) (thickness 0.15)))
+  )
+  (fp_text value PinHeader_1x01_P1.27mm_Vertical (at 0 1.695) (layer F.Fab)
+    (effects (font (size 1 1) (thickness 0.15)))
+  )
+  (pad 1 thru_hole circle (at 0 0) (size 1 1) (drill 0.65) (layers *.Cu *.Mask))
+  (model ${KISYS3DMOD}/Connector_PinHeader_1.27mm.3dshapes/PinHeader_1x01_P1.27mm_Vertical.wrl
+    (at (xyz 0 0 0))
+    (scale (xyz 1 1 1))
+    (rotate (xyz 0 0 0))
+  )
+)

Prototyping_Board/pcb_perf/EDIT_C.pro

@@ -0,0 +1,33 @@
+update=22/05/2015 07:44:53
+version=1
+last_client=kicad
+[general]
+version=1
+RootSch=
+BoardNm=
+[pcbnew]
+version=1
+LastNetListRead=
+UseCmpFile=1
+PadDrill=0.600000000000
+PadDrillOvalY=0.600000000000
+PadSizeH=1.500000000000
+PadSizeV=1.500000000000
+PcbTextSizeV=1.500000000000
+PcbTextSizeH=1.500000000000
+PcbTextThickness=0.300000000000
+ModuleTextSizeV=1.000000000000
+ModuleTextSizeH=1.000000000000
+ModuleTextSizeThickness=0.150000000000
+SolderMaskClearance=0.000000000000
+SolderMaskMinWidth=0.000000000000
+DrawSegmentWidth=0.200000000000
+BoardOutlineThickness=0.100000000000
+ModuleOutlineThickness=0.150000000000
+[cvpcb]
+version=1
+NetIExt=net
+[eeschema]
+version=1
+LibDir=
+[eeschema/libraries]

Prototyping_Board/pcb_perf/fp-lib-table

@@ -0,0 +1,3 @@
+(fp_lib_table
+  (lib (name footprints)(type KiCad)(uri /home/layoutdev/Desktop/code/documentation_general/Electronics_Projects_2020/Prototyping_Board/footprints)(options "")(descr ""))
+)

Prototyping_Board/pcb_perf/gerbers/EDIT_C-Edge.Cuts.gm1

@@ -0,0 +1,40 @@
+G04 #@! TF.GenerationSoftware,KiCad,Pcbnew,5.0.2+dfsg1-1~bpo9+1*
+G04 #@! TF.CreationDate,2020-04-04T02:03:36-04:00*
+G04 #@! TF.ProjectId,EDIT_C,45444954-5f43-42e6-9b69-6361645f7063,0.10.a*
+G04 #@! TF.SameCoordinates,Original*
+G04 #@! TF.FileFunction,Profile,NP*
+%FSLAX46Y46*%
+G04 Gerber Fmt 4.6, Leading zero omitted, Abs format (unit mm)*
+G04 Created by KiCad (PCBNEW 5.0.2+dfsg1-1~bpo9+1) date Sat 04 Apr 2020 02:03:36 AM EDT*
+%MOMM*%
+%LPD*%
+G01*
+G04 APERTURE LIST*
+%ADD10C,0.200000*%
+G04 APERTURE END LIST*
+D10*
+X98425000Y-115570000D02*
+X12700000Y-115570000D01*
+X20320000Y-41910000D02*
+X98425000Y-41910000D01*
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+X101600000Y-112395000D02*
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+X12700000Y-69850000D02*
+X12700000Y-114300000D01*
+X20320000Y-41910000D02*
+X19050000Y-41910000D01*
+M02*