Implement and document Arduino software

documentation/Makefile

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+# Copyright (c):
+#
+# Philipp Matthias Schäfer (philipp.matthias.schaefer@posteo.de), 2020
+#
+# This file is part of the KrautStatus' Arduino code.
+#
+# The Clean CommonMark library is free software: you can redistribute it and/or
+# modify it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# The Clean CommonMark library is distributed in the hope that it will be
+# useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License along
+# with the Clean CommonMark library. If not, see
+# <https://www.gnu.org/licenses/>.
+
+.PHONY: all clean
+
+all: arduino.png
+
+clean:
+	rm --recursive build
+
+arduino.png: arduino.tex build
+	pdflatex -output-directory build arduino
+	convert -density 300 build/arduino.pdf -trim -colorspace RGB arduino.png
+
+build:
+	mkdir --parents build

documentation/arduino.tex

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+\documentclass[border=1mm]{standalone}
+
+\usepackage{tikz}
+\usetikzlibrary{positioning}
+\usepackage{circuitikz}
+
+\begin{document}
+
+\begin{circuitikz}[
+  chip/.style = {
+    dipchip,
+    hide numbers,
+    no topmark,
+    external pins width=0,
+    num pins=14,
+  }]
+  \ctikzset{multipoles/dipchip/width=1.6}
+
+  % Arduino MKR1000
+  \node [chip] (MKR1000) {};
+  % align=center enables line breaks in node text
+  \node [align=center, rotate=90] at (MKR1000.center){Arduino\\MKR1000};
+
+  \draw (MKR1000.n) -- ++(0,1) node[vcc]{};
+  \draw (MKR1000.s) -- ++(0,-1) node[ground] {};
+
+  \node [right, font=\tiny] at (MKR1000.bpin 4) {0};
+
+  \node [left, font=\tiny] at (MKR1000.bpin 12) {VIN};
+  \node [left, font=\tiny] at (MKR1000.bpin 11) {A3};
+  \node [left, font=\tiny] at (MKR1000.bpin 10) {A4};
+
+  % Arduino MKR RGB Shield
+  \node[chip, right=of MKR1000] (RGB) {};
+  % align=center enables line breaks in node text
+  \node [align=center, rotate=90] at (RGB.center){Arduino\\MKR RGB Shield};
+
+  \draw (RGB.s) -- ++(0, -1) node[ground]{};
+
+  \node [right, font=\tiny] at (RGB.bpin 3) {VIN};
+  \node [right, font=\tiny] at (RGB.bpin 4) {A3};
+  \node [right, font=\tiny] at (RGB.bpin 5) {A4};
+
+  \draw (MKR1000.bpin 12) -- (RGB.bpin 3);
+  \draw (MKR1000.bpin 11) -- (RGB.bpin 4);
+  \draw (MKR1000.bpin 10) -- (RGB.bpin 5);
+
+  % Reed switch
+  \draw (MKR1000.bpin 4) -- ++(-1, 0) to [normal open switch, name=R] ++(0, -2.96) node[ground]{};
+
+  \node [rotate=90, above] at (R) {Reed Switch};
+\end{circuitikz}
+
+
+\end{document}