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235 lines
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9.1 KiB
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<meta charset="utf-8">
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<title>Arduino - Home Assistant</title>
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<meta name="author" content="Paulus Schoutsen">
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<meta name="description" content="Instructions how to setup an Arduino boards within Home Assistant.">
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<meta property="og:title" content="Arduino">
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<meta property="og:description" content="Instructions how to setup an Arduino boards within Home Assistant.">
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<span>Home Assistant</span>
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<ul class="menu pull-right">
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<li>
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<a href="/getting-started/">Getting started</a>
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<ul>
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<li><a href='/getting-started/'>Installing Home Assistant</a></li>
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<li><a href='/getting-started/configuration/'>Configuration basics</a></li>
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<li><a href='/getting-started/devices/'>Adding devices</a></li>
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Creating components
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Adding platform support
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<article class="page">
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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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</header>
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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 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 arduino 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>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>configuration.yaml</code> file:</p>
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<div class="highlighter-coderay"><div class="CodeRay">
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<div class="code"><pre><span class="comment"># Example configuration.yaml entry</span>
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<span class="key">arduino</span>:
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<span class="key">port</span>: <span class="string"><span class="content">/dev/ttyACM0</span></span>
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</pre></div>
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</div>
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</div>
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<p>Configuration variables:</p>
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<ul>
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<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>
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</ul>
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<p>The exact number can be determined with the command shown below.</p>
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<div class="highlighter-coderay"><div class="CodeRay">
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<div class="code"><pre>$ ls /dev/ttyACM*
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</pre></div>
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</div>
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</div>
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<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>
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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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</article>
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</div>
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<div class="grid">
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<section class="aside-module grid__item one-whole lap-one-half">
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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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<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/sensor.dht/'>DHT sensor</a>
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</li>
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<li>
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<a href='/components/sensor.rpi_gpio/'>Raspberry PI GPIO sensor</a>
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</li>
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<li>
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<a href='/components/switch.rpi_gpio/'>Raspberry PI GPIO switch</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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