Trigger gpio input programmatically or with gpio output

ESPHome
1

I have a gpio input defined as a binary sensor and is driven by a LM393 comparator. I’d like to trigger this input with a pulse from a HA dashboard button. Can this be accomplished thru the yaml config. or by using a gpio switch output fed back electronically to the binary input pin?

2

I realized my approach was incorrect. what I needed was to create a script entry in the yaml file and also a Button template. Now I can execute the script by either the binary_sensor or the button. Adding the Button to the yaml also makes it available in HA.

Here’s the code I ended up with.

binary_sensor:
  - platform: gpio
    id: gpio21
    name: Water Sensor
    publish_initial_state: True
    pin:
      number: 21
      mode:
        input: True
        pullup: False
        pulldown: True
    filters:
      - delayed_on: 30ms
    on_press:
      then:
         - script.execute: drain_tank

button:
  - platform: template
    name: "Start Draining"
    on_press:
      - script.execute: drain_tank

script:
  - id: drain_tank
    mode: single
    then:
        - switch.turn_on: gpio2
        - switch.turn_on: gpio16
        - delay: 5s
        - switch.turn_on: gpio17
        - delay: !lambda "return id(glob_drain_delay) * 60000;"
        - switch.turn_off: gpio2
        - switch.turn_off: gpio17
        - switch.turn_off: gpio16
1 Like