236 lines
12 KiB
HTML
236 lines
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<title>Arduino - Home Assistant</title>
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<meta name="description" content="Instructions how to setup an Arduino boards within Home Assistant.">
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<span>Home Assistant</span>
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<header>
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<h1 class="title indent">
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Arduino
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</h1>
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<hr class="divider">
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<p>The <a href="https://www.arduino.cc/">Arduino</a> device family are microcontroller boards that are often based on the ATmega328 chip. They come with digital input/output pins (some can be used as PWM outputs), analog inputs, and a USB connection. The equipment depends on the <a href="https://www.arduino.cc/en/Main/Products">type</a> of the board. The most common ones are the Arduino Uno and the Arduino Leonardo with 14 digital input/output pins and 6 analog input pins.</p>
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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>
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<p>The <code class="highlighter-rouge">arduino</code> component is designed to let you use a directly attached board to your Home Assistant host over USB.</p>
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<p>You need to have the <a href="https://github.com/firmata/">Firmata firmware</a> on your board. Please upload the <code class="highlighter-rouge">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>To integrate an Arduino boards with Home Assistant, add the following section to your <code class="highlighter-rouge">configuration.yaml</code> file:</p>
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<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="c1"># Example configuration.yaml entry</span>
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<span class="s">arduino</span><span class="pi">:</span>
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<span class="s">port</span><span class="pi">:</span> <span class="s">/dev/ttyACM0</span>
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</code></pre>
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</div>
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<div class="config-vars">
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<h3><a class="title-link" name="configuration-variables" href="#configuration-variables"></a> Configuration Variables</h3>
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<dl class="">
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<dt><a class="title-link" name="port" href="#port"></a> port</dt>
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<dd>
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<p class="desc"><span class="type">(<span class="string">string</span>)</span><span class="required">(Required)</span><span class="description">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 class="highlighter-rouge">ttyACM*</code> otherwise <code class="highlighter-rouge">ttyUSB*</code>.</span></p>
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</dd>
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</dl>
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</div>
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<p>The exact number can be determined with the command shown below.</p>
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<div class="language-bash highlighter-rouge"><pre class="highlight"><code><span class="gp">$ </span>ls /dev/ttyACM<span class="k">*</span>
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</code></pre>
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</div>
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<p>If that’s not working, check your <code class="highlighter-rouge">dmesg</code> or <code class="highlighter-rouge">journalctl -f</code> output. Keep in mind that Arduino clones are often using a different name for the port (e.g. <code class="highlighter-rouge">/dev/ttyUSB*</code>).</p>
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<p class="note warning">
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A word of caution: The Arduino boards are not storing states. This means that with every initialization the pins are set to off/low.
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</p>
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<p>Add the user who is used to run Home Assistant to the groups to allow access to the serial port.</p>
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<div class="language-bash highlighter-rouge"><pre class="highlight"><code><span class="gp">$ </span>sudo usermod -a -G dialout,lock <span class="nv">$USER</span>
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</code></pre>
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</div>
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</article>
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<div class="grid">
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<div class='edit-github'><a href='https://github.com/home-assistant/home-assistant.github.io/tree/current/source/_components/arduino.markdown'>Edit this page on GitHub</a></div>
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<div class='brand-logo-container section'>
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<img src='/images/supported_brands/arduino.png' />
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</div>
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<div class='section'>
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IoT class<sup><a href='/blog/2016/02/12/classifying-the-internet-of-things/#classifiers'><i class="icon-info-sign"></i></a></sup>: Local Polling
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</div>
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<div class='section'>
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Introduced in release: pre 0.7
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</div>
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<div class='section'>
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<h1 class='title delta'>Related components</h1>
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<ul class='divided'>
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<li><a href='/components/sensor.arduino/'>
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Arduino Sensor
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</a></li>
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<li><a href='/components/switch.arduino/'>
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Arduino Switch
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</a></li>
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</ul>
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</div>
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<div class='section'>
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<h1 class="title delta">Category DIY</h1>
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<ul class='divided'>
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<li>
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Arduino
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</li>
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<li>
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<a href='/components/sensor.arduino/'>Arduino Sensor</a>
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</li>
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<li>
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<a href='/components/switch.arduino/'>Arduino Switch</a>
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</li>
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<li>
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<a href='/components/bbb_gpio/'>BeagleBone Black GPIO</a>
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</li>
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<li>
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<a href='/components/sensor.dht/'>DHT Sensor</a>
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</li>
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<li>
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<a href='/components/sensor.eddystone_temperature/'>Eddystone Beacon</a>
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</li>
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<li>
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<a href='/components/sensor.miflora/'>Mi Flora plant sensor</a>
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</li>
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<li>
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<a href='/components/sensor.onewire/'>One wire Sensor</a>
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</li>
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<li>
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<a href='/components/sensor.serial_pm/'>Particulate matter Sensor</a>
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</li>
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<li>
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<a href='/components/rpi_pfio/'>PiFace Digital I/O</a>
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</li>
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<li>
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<a href='/components/rpi_gpio/'>Raspberry Pi GPIO</a>
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</li>
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<li>
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<a href='/components/raspihats/'>Raspihats</a>
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</li>
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<li>
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<a href='/components/sensor.skybeacon/'>Skybeacon sensor</a>
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</li>
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<li>
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<a href='/components/sensor.worxlandroid/'>Worx Landroid</a>
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</li>
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<li>
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<a href='/components/zigbee/'>ZigBee</a>
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</li>
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</ul>
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</div>
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</section>
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