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Keyboard Remote
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<p>Receive signals from a keyboard and use it as a remote control.</p>
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<p>This component allows you to use a keyboard as remote control. It will fire <code class="highlighter-rouge">keyboard_remote_command_received</code> events which can then be used in automation rules.</p>
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<p>The <code class="highlighter-rouge">evdev</code> package is used to interface with the keyboard and thus this is Linux only. It also means you can’t use your normal keyboard for this because <code class="highlighter-rouge">evdev</code> will block it.</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">keyboard_remote</span><span class="pi">:</span>
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<span class="s">type</span><span class="pi">:</span> <span class="s1">'</span><span class="s">key_up'</span>
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</code></pre>
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</div>
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<p>Configuration variables:</p>
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<ul>
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<li><strong>type</strong> (<em>Required</em>): Possible values are <code class="highlighter-rouge">key_up</code>, <code class="highlighter-rouge">key_down</code>, and <code class="highlighter-rouge">key_hold</code>. Be careful, <code class="highlighter-rouge">key_hold</code> will fire a lot of events.</li>
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<li><strong>device_descriptor</strong> (<em>Optional</em>): Path to the local event input device file that corresponds to the keyboard.</li>
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<li><strong>device_name</strong> (<em>Optional</em>): Name of the keyboard device.</li>
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</ul>
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<p>Either <code class="highlighter-rouge">device_name</code> or <code class="highlighter-rouge">device_descriptor</code> must be present in the configuration entry. Indicating a device name is useful in case of repeating disconnections and re-connections of the device (for example, a bluetooth keyboard): the local input device file might change, thus breaking the configuration, while the name remains the same.
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In case of presence of multiple devices of the same model, <code class="highlighter-rouge">device_descriptor</code> must be used.</p>
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<p>A list of possible device descriptors and names is reported in the debug log at startup when the device indicated in the configuration entry could not be found.</p>
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<p>A full configuration for Keyboard Remote could look like the one below:</p>
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<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="s">keyboard_remote</span><span class="pi">:</span>
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<span class="s">device_descriptor</span><span class="pi">:</span> <span class="s1">'</span><span class="s">/dev/input/by-id/bluetooth-keyboard'</span>
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<span class="s">type</span><span class="pi">:</span> <span class="s1">'</span><span class="s">key_up'</span>
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</code></pre>
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</div>
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<p>or like the following:</p>
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<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="s">keyboard_remote</span><span class="pi">:</span>
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<span class="s">device_name</span><span class="pi">:</span> <span class="s1">'</span><span class="s">Bluetooth</span><span class="nv"> </span><span class="s">Keyboard'</span>
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<span class="s">type</span><span class="pi">:</span> <span class="s1">'</span><span class="s">key_down'</span>
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</code></pre>
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</div>
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<p>And an automation rule to breathe life into it:</p>
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<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="s">automation</span><span class="pi">:</span>
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<span class="s">alias</span><span class="pi">:</span> <span class="s">Keyboard all lights on</span>
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<span class="s">trigger</span><span class="pi">:</span>
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<span class="s">platform</span><span class="pi">:</span> <span class="s">event</span>
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<span class="s">event_type</span><span class="pi">:</span> <span class="s">keyboard_remote_command_received</span>
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<span class="s">event_data</span><span class="pi">:</span>
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<span class="s">key_code</span><span class="pi">:</span> <span class="s">107</span> <span class="c1"># inspect log to obtain desired keycode</span>
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<span class="s">action</span><span class="pi">:</span>
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<span class="s">service</span><span class="pi">:</span> <span class="s">light.turn_on</span>
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<span class="s">entity_id</span><span class="pi">:</span> <span class="s">light.all</span>
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</code></pre>
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</div>
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<h2><a class="title-link" name="disconnections" href="#disconnections"></a> Disconnections</h2>
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<p>This component manages disconnections and re-connections of the keyboard, for example in the case of a bluetooth device that turns off automatically to preserve battery.</p>
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<p>If the keyboard disconnects, the component will fire an event <code class="highlighter-rouge">keyboard_remote_disconnected</code>.
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When the keyboard reconnects, an event <code class="highlighter-rouge">keyboard_remote_connected</code> will be fired.</p>
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<p>Here’s an automation example that plays a sound through a media player whenever the keyboard connects/disconnects:</p>
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<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="s">automation</span><span class="pi">:</span>
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<span class="pi">-</span> <span class="s">alias</span><span class="pi">:</span> <span class="s">Keyboard Connected</span>
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<span class="s">trigger</span><span class="pi">:</span>
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<span class="s">platform</span><span class="pi">:</span> <span class="s">event</span>
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<span class="s">event_type</span><span class="pi">:</span> <span class="s">keyboard_remote_connected</span>
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<span class="s">action</span><span class="pi">:</span>
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<span class="pi">-</span> <span class="s">service</span><span class="pi">:</span> <span class="s">media_player.play_media</span>
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<span class="s">data</span><span class="pi">:</span>
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<span class="s">entity_id</span><span class="pi">:</span> <span class="s">media_player.speaker</span>
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<span class="s">media_content_id</span><span class="pi">:</span> <span class="s">keyboard_connected.wav</span>
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<span class="s">media_content_type</span><span class="pi">:</span> <span class="s">music</span>
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<span class="pi">-</span> <span class="s">alias</span><span class="pi">:</span> <span class="s">Keyboard Disconnected</span>
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<span class="s">trigger</span><span class="pi">:</span>
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<span class="s">platform</span><span class="pi">:</span> <span class="s">event</span>
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<span class="s">event_type</span><span class="pi">:</span> <span class="s">keyboard_remote_disconnected</span>
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<span class="s">action</span><span class="pi">:</span>
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<span class="pi">-</span> <span class="s">service</span><span class="pi">:</span> <span class="s">media_player.play_media</span>
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<span class="s">data</span><span class="pi">:</span>
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<span class="s">entity_id</span><span class="pi">:</span> <span class="s">media_player.speaker</span>
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<span class="s">media_content_id</span><span class="pi">:</span> <span class="s">keyboard_disconnected.wav</span>
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<span class="s">media_content_type</span><span class="pi">:</span> <span class="s">music</span>
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</code></pre>
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</div>
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<h2><a class="title-link" name="permissions" href="#permissions"></a> Permissions</h2>
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<p>There might be permissions problems with the event input device file. If this is the case, the user that hass runs as must be allowed read and write permissions with:</p>
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<div class="highlighter-rouge"><pre class="highlight"><code>sudo setfacl -m u:HASS_USER:rw /dev/input/event*
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</code></pre>
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</div>
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<p>where <code class="highlighter-rouge">HASS_USER</code> is the user hass runs as.</p>
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<p>If you want to make this permanent, you can use a udev rule that sets it for all event input devices. Add a file <code class="highlighter-rouge">/etc/udev/rules.d/99-userdev-input.rules</code> containing:</p>
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<div class="highlighter-rouge"><pre class="highlight"><code>KERNEL=="event*", SUBSYSTEM=="input", RUN+="/usr/bin/setfacl -m u:HASS_USER:rw $env{DEVNAME}"
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</code></pre>
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</div>
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<p>You can check ACLs permissions with</p>
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<div class="highlighter-rouge"><pre class="highlight"><code>getfacl /dev/input/event*
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</code></pre>
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