Electronics_Projects_2019/2019_SelfHostedDataLogging/docs/2.tex

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\title{\textbf{Self Hosted Data Logger for Arduino}}
\author{Steak Electronics}
\date{}
\begin{document}

\maketitle

\section{Preface}
I did some research on available self hosted solutions for Arduino, as of January 2019. I was thinking of using Thingspeak, but they haven't updated their self hosted git repo since 2016. Adafruit.io is the same but 2017\footnote{And uses node.js :/}. Sparkfun closed down their solution.\footnote{Apparently they have no idea what they are doing, and their solution inevitably blew up. Bloated software...} It seems theother data aggregaters are only interested in people giving them data, so they can then sell it, hoard it like wealth, etc... Another solution is necessary.
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\section{Plan}
Since I've done some data logging with GNUplot before, I've decided to use a flat text file, and csv output. I don't want to deal with MQTT, as this is in a safe LAN (not over WAN), and security is no issue. I also don't want the clients to do any sending. They are stupid, they sit there, and the server is responsible for data collecting. Simple.
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What I will do, as I've already started doing, is hosting a web server on the microcontroller, which has amongst other things, sensor data available. The server will pull data from the sensor, and place it into a flat file. GNUplot will run via cron scripts, and the server will host various jpgs. Let's see how this goes.


\section{Implementation}
\textbf{Ingredients}
\begin{itemize}
\item SBC (Beaglebone, Rpi)
\item Network Connected Sensors
  \item Time
  \end{itemize}




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