How can HA know state of switches - open/close

ESPHome
1

I’m sure there’s a simple way to do this, but I’m puzzled. I have two relays, one to open a valve and one to close the valve. I don’t want an automation to turn on a relay when it is already in the desired state). What’s the best way to have HA know what the current state is?

switch:
  - platform: gpio
    # SN74HC595 Pin #0
    name: "Switch 1"
    pin:
      sn74hc595: sn74hc595_hub
      # Use pin number 0
      number: 0
      inverted: false
      id: relay1

  - platform: gpio
    # SN74HC595 Pin #1
    name: "Switch 2"
    pin:
      sn74hc595: sn74hc595_hub
      # Use pin number 1
      number: 1
      inverted: false
      id: relay2
2

Hi Dan, I think (only started with ESPHome recently) you have to create a (binary) sensor in your ESP config which will be exposed to HA to be used as a state.

3

I think you want to momentary activate the relay to open or close it?

If so, I would make the two switches you have now fully internal. And add a template switch. Or better, a template valve.

switch:
  - platform: gpio
    # SN74HC595 Pin #0
    name: "Switch open"
    id: valve_open
    internal: true
    pin:
      sn74hc595: sn74hc595_hub
      # Use pin number 0
      number: 0
      inverted: false
      id: relay1
  
  - platform: gpio
    # SN74HC595 Pin #1
    name: "Switch Close"
    id: valve_close
    internal: true
    pin:
      sn74hc595: sn74hc595_hub
      # Use pin number 1
      number: 1
      inverted: false
      id: relay2

valve:
  - platform: template
    name: "Valve"
    id: my_valve
    optimistic: true
    restore_mode: RESTORE
    open_action: 
      - switch.turn_on: valve_open
      - delay: 1s
      - switch.turn_off: valve_open
    close_action: 
      - switch.turn_on: valve_close
      - delay: 1s
      - switch.turn_off: valve_close
1 Like
4

Thank you very much. This solution works perfectly!

5

Good you got it solved!

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