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Site updated at 2015-10-31 05:14:10 UTC

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Paulus Schoutsen 2015-10-30 22:14:10 -07:00
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<p>There are a lot of extensions (so called <a href="https://www.arduino.cc/en/Main/ArduinoShields">shields</a>) available. Those shields can be plugged-in into the existing connectors and stacked on top of each other. This makes it possible to expand the capabilities of the Arduino boards.</p>
<h2>Basic Configuration</h2>
<p>The arduino component is designed to let you use a directly attached board to your Home Assistant host over USB.</p>
<p>You need to have the <a href="https://github.com/firmata/">Firmata firmware</a> on your board. Please upload the <code>StandardFirmata</code> sketch to your board, please refer to the <a href="https://www.arduino.cc/en/Main/Howto">Arduino documentation</a> for further information.</p>
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<p>Configuration variables:</p>
<ul>
<li><strong>port</strong> (<em>Required</em>): The port where your board is connected to your Home Assistant host. If you are using an original Arduino the port will be named <code>ttyACM*</code>. The exact number can be determined with <code>ls /dev/ttyACM*</code>.</li>
<li><strong>port</strong> (<em>Required</em>): The port where your board is connected to your Home Assistant host. If you are using an original Arduino the port will be named <code>ttyACM*</code> otherwise <code>ttyUSB*</code>.</li>
</ul>
<p>The exact number can be determined with the command shown below.</p>
<div class="highlighter-coderay"><div class="CodeRay">
<div class="code"><pre>$ ls /dev/ttyACM*
</pre></div>
</div>
</div>
<p>If that is not working, check your <code>dmesg</code> or <code>journalctl -f</code> output. Keep in mind that Arduino clones are often using a different name for the port (e.g. <code>/dev/ttyUSB*</code>).</p>
<p>If that’s not working, check your <code>dmesg</code> or <code>journalctl -f</code> output. Keep in mind that Arduino clones are often using a different name for the port (eg. <code>/dev/ttyUSB*</code>).</p>
<p class="note warning">
A word of caution: The Arduino boards are not storing states. This means that with every initialization the pins are set to off/low.
</p>
<h2>Building on top of the Arduino component</h2>
<ul>
<li><a href="/components/sensor.arduino/">Arduino Sensor</a></li>
<li><a href="/components/switch.arduino/">Arduino Switch</a></li>
</ul>
</article>