diff --git a/Door_Alarm/docs/4.aux b/Door_Alarm/docs/4.aux index 8b1d0c2..f57e0d6 100644 --- a/Door_Alarm/docs/4.aux +++ b/Door_Alarm/docs/4.aux @@ -2,3 +2,5 @@ \@writefile{toc}{\contentsline {section}{\numberline {1}Overview}{1}} \@writefile{toc}{\contentsline {section}{\numberline {2}BOM}{1}} \@writefile{toc}{\contentsline {section}{\numberline {3}Work Log: LM324, LM555, TIP120,125}{2}} +\@writefile{toc}{\contentsline {section}{\numberline {4}Door Magnet Reed Sensor}{3}} +\@writefile{toc}{\contentsline {subsection}{\numberline {4.1}Buzzer or Bell}{3}} diff --git a/Door_Alarm/docs/4.log b/Door_Alarm/docs/4.log index b79d96b..bab4189 100644 --- a/Door_Alarm/docs/4.log +++ b/Door_Alarm/docs/4.log @@ -1,4 +1,4 @@ -This is pdfTeX, Version 3.14159265-2.6-1.40.17 (TeX Live 2016/Debian) (preloaded format=pdflatex 2019.8.17) 12 FEB 2020 04:17 +This is pdfTeX, Version 3.14159265-2.6-1.40.17 (TeX Live 2016/Debian) (preloaded format=pdflatex 2019.8.17) 13 FEB 2020 12:00 entering extended mode restricted \write18 enabled. %&-line parsing enabled. @@ -234,7 +234,10 @@ LaTeX Font Info: External font `cmex10' loaded for size (Font) <8> on input line 14. 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PDF statistics: - 42 PDF objects out of 1000 (max. 8388607) - 29 compressed objects within 1 object stream + 45 PDF objects out of 1000 (max. 8388607) + 31 compressed objects within 1 object stream 0 named destinations out of 1000 (max. 500000) 1 words of extra memory for PDF output out of 10000 (max. 10000000) diff --git a/Door_Alarm/docs/4.pdf b/Door_Alarm/docs/4.pdf index dde323d..bd9d7c2 100644 Binary files a/Door_Alarm/docs/4.pdf and b/Door_Alarm/docs/4.pdf differ diff --git a/Door_Alarm/docs/4.tex b/Door_Alarm/docs/4.tex index 08dbd3f..7b65c29 100644 --- a/Door_Alarm/docs/4.tex +++ b/Door_Alarm/docs/4.tex @@ -63,6 +63,27 @@ Before realizing this error, I breadboarded two op amps, (ref: https://electroni Next, I will breadboard the triple 5 with the LM324 (which may be optional) and use that. I will throw in an Arduino to switch the triple 5 on/off via the RST pin. This will allow for some adjustment of tone.\footnote{I could just use the tone() function on the Uno, and have a transistor handle the output, but the goal of this project was to lean more towards the analog.} Future improvements would be to get some way of removing the Arduino from the project. I would need a solution that will adjust how often the RST pin is switched, for some short period of time while the door magnet switch is active. +I might end up just using tone, if the 555 doesn't sound good. + +\section{Door Magnet Reed Sensor} +I tried buying one from mouser,digikey but they are all small. Seems the standard is 28mm by 10mm or so. I didn't realize it until I purchased it, but it looks quite a bit smaller than I am used to. Not acceptable. + +I spent some time looking at all the options. I was unable to find the bigger size. Even the imports from Sparkfun and Adafruit were small. There was a nice screw terminal omrom option but it was \$30. I opted for ebay where there were some used, brand name, sensors in the US. I found some for about \$5 each, including magnet AND the sensor (on mouser/digikey, you often have to get them separately). + +\subsection{Buzzer or Bell} +I thought about a buzzer. Like, a ringer from a telephone. I didn't find them on mouser/digikey, but I did see a lot of piezo buzzers. Need to look again. Even better would be a bell, but that requires an actuator or a motor. I don't want to deal with moving parts, it will be more likely to break. Let's put that idea aside for another day. + +Still, I like the idea of a bell, and an actuator to ring it... + +I tried one on ebay. If that doesn't work there is this one: +https://www.allelectronics.com/item/sol-154/12vdc-push-type-solenoid/1.html +per this discussion: https://forum.sparkfun.com/viewtopic.php?t=10308 + +As for the bell, I will hold off until I know how the solenoid works. +\footnote{I decided that the sound of the bell is worth the risk of using moving parts.} + + + diff --git a/Door_Alarm/docs/4.toc b/Door_Alarm/docs/4.toc index 208dc6e..d43a608 100644 --- a/Door_Alarm/docs/4.toc +++ b/Door_Alarm/docs/4.toc @@ -1,3 +1,5 @@ \contentsline {section}{\numberline {1}Overview}{1} \contentsline {section}{\numberline {2}BOM}{1} \contentsline {section}{\numberline {3}Work Log: LM324, LM555, TIP120,125}{2} +\contentsline {section}{\numberline {4}Door Magnet Reed Sensor}{3} +\contentsline {subsection}{\numberline {4.1}Buzzer or Bell}{3}