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116 lines
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116 lines
3.5 KiB
ReStructuredText
Dual relay cover motor control
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==============================
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.. seo::
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:description: An example of how to integrate covers that are controlled by two relays into ESPHome.
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:image: sonoff_dual_r2.jpg
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:keywords: Relay, Sonoff Dual R2, Cover
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The following is a possible configuration file for common covers that use a motor with 2 inputs.
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Only one should be powered at a time (interlocking) to either move the cover up or down. For this
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the `Sonoff Dual R2 <https://www.itead.cc/sonoff-dual.html>`__ can be used which has two independent
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relays. Additionally this configuration allows the single button on the Sonoff to control the motion
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by cycling between: open->stop->close->stop->...
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These kind of motors automatically stop when the end of the cover movement is reached. However,
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to be safe, this automation stops powering the motor after 1 minute of movement. In the rare case
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of the end-stop switch in the motor failing this will reduce the risk for damage or fire.
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Of the four main components (button sensor, 2 relays switches and the cover), only the cover will be
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visible to the end-user. The other three are hidden by means of not including a ``name``. This is to
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prevent accidentally switching on both relays simultaneously from Home Assistant as that might be harmful
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for some motors.
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.. note::
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Controlling the cover to quickly (sending new open/close commands within a minute of previous commands)
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might cause unexpected behaviour (eg: cover stopping halfway). This is because the delayed relay off
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feature is implemented using asynchronous automations. So every time a open/close command is sent a
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delayed relay off command is added and old ones are not removed.
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.. code-block:: yaml
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esphome:
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name: cover
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platform: ESP8266
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board: esp01_1m
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wifi:
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ssid: '***'
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password: '***'
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api:
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logger:
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ota:
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binary_sensor:
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- platform: gpio
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pin:
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number: 10
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inverted: true
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id: button
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on_press:
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then:
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# logic for cycling through movements: open->stop->close->stop->...
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- lambda: |
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if (id(cover).state == cover::COVER_OPEN) {
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if (id(open).state){
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// cover is in opening movement, stop it
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id(cover).stop();
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} else {
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// cover has finished opening, close it
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id(cover).close();
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}
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} else {
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if (id(close).state){
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// cover is in closing movement, stop it
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id(cover).stop();
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} else {
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// cover has finished closing, open it
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id(cover).open();
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}
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}
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switch:
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- platform: gpio
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pin: 12
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id: open
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- platform: gpio
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pin: 5
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id: close
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cover:
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- platform: template
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name: "Cover"
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id: cover
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open_action:
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# cancel potential previous movement
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- switch.turn_off: close
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# perform movement
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- switch.turn_on: open
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# wait until cover is open
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- delay: 60s
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# turn of relay to prevent keeping the motor powered
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- switch.turn_off: open
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close_action:
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- switch.turn_off: open
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- switch.turn_on: close
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- delay: 60s
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- switch.turn_off: close
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stop_action:
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- switch.turn_off: open
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- switch.turn_off: close
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optimistic: true
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See Also
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--------
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- :doc:`/guides/automations`
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- :doc:`/components/cover/template`
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- :doc:`/devices/sonoff`
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- :ghedit:`Edit`
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.. disqus::
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