Entropy Reduction

Personal log of yet another digital native.

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Project maintained by andre-abadi Hosted on GitHub Pages — Theme by mattgraham

Purpose

• Develop code for doorbell button using Home Assistant and ESPHome
• Use the button obtained for a doorbell, 5V illuminated SPST switch

Actions

• Obtained pre-soldered D1 mini from another mothballed project
• Grabbed a DIY DuPont rail (header pins with wire soldered along back)
• Wired up button light to D1 & GND
• Wired up button press to D2 & GND
• Developed code using ESPHome documentation

Reflections

• End result is quite haptic
  • Pressing button gets visual result (flashing)
  • Button unavailable gets visual result (remains on while delayed-off elapses)
  • Button becoming available again has visual cue (light on again)

Code

switch:
  - platform: gpio
    pin: D1
    id: d1
    name: "${friendly_name} Light"
    restore_mode: ALWAYS_ON
    internal: true

binary_sensor:
  - platform: gpio
    id: d2
    icon: mdi:radiobox-marked
    name: "${friendly_name} Button"
    #device_class: garage_door
    pin:
      number: D2
      inverted: true
      mode: INPUT_PULLUP
    filters:
      - delayed_off: 30s
    # automation when button is pressed
    on_press:
      - repeat:
          count: 15
          then:
            - switch.turn_off: d1
            - delay: 50ms
            - switch.turn_on: d1
      - switch.turn_off: d1
    on_release:
      then:
        - switch.turn_on: d1