ESP Home simple switch / button wiring and code

ESPHome
1

Hi guys,
I am now a newbie and playing around with my ESP32 board and Home Assistant. I have succesfully added the RGB diode which shows me entity status from Home Assistant (i.e. Peak electricity tariff light RED, non-peak green).

I am struggling to wire and code a simple button / microswitch.
I got it wired as it is shown on the picture.

esphome-switch-01
esphome-switch-011875×1006 227 KB

What I want to have is:

  • when the button is pressed, it toggles a Home Assistant switch.
  • meaning when I press the button, it will start a heating
  • I already have an automation for this via zigbee button which works fine.
  • I need to change this zigbee button to my new ESP32 button.

I have tried many codes, went through the documentation, but still no success.

Any more info you need, please let me know…

Thanks very much for your kind assistance

2

Try this

3

Hey man,
thanks a lot for your answer.
I have tried it and either I am dumb (preferably) or I am doing something wrong. Still can not get the result.

Pressing the button makes no difference in Home Assitant - I can not see the HA switch going ON / OFF when I physically press the button.

4

You need gpio binary sensor
And set internal pullup

binary_sensor:
  - platform: gpio
    pin:
      number: D2
      mode:
        input: true
        pullup: true
    name: My Button
    inverted: true
    filters:
      - delayed_on: 10ms
      - delayed_off: 10ms

And then add your automation
on_press:
Binary Sensor Component — ESPHome

5

Hi,
thank you. Gives me this error:

INFO ESPHome 2025.2.2
INFO Reading configuration /config/esphome/esphome-web-d3b75c.yaml...
Failed config

binary_sensor.gpio: [source /config/esphome/esphome-web-d3b75c.yaml:44]
  platform: gpio
  pin: 
    
    Cannot resolve pin name 'D19' for board esp32dev.
    number: D19
    mode: 
      input: True
      pullup: True
  name: My Button
  
  [inverted] is an invalid option for [binary_sensor.gpio]. Please check the indentation.
  inverted: True
  filters: 
    - delayed_on: 10ms

Any idea?

6

Sorry for that, it was supposed to be on pin configuration:

binary_sensor:
  - platform: gpio
    pin:
      number: D2
      inverted: true
      mode:
        input: true
        pullup: true
       
    name: My Button
    filters:
      - delayed_on: 10ms
      - delayed_off: 10ms

Also, I strongly suggest to use GPIO pin definition, not Dxx.

7

I have just asked first time in my life Chat GPT and this bastard gave me the right code :slight_smile:

binary_sensor:
  - platform: gpio
    pin:
      number: 19  # Změněno na D19 (GPIO19)
      mode: INPUT_PULLUP  # Aktivujeme interní pull-up rezistor
      inverted: true  # Stisknuté tlačítko = LOW, invertujeme na HIGH
    name: "ESP32 Tlačítko"
    device_class: power  # Můžeš změnit na "motion", "occupancy", "door", podle použití
    on_press:
      then:
        - switch.toggle: tlacitko_stav  # Přepíná stav tlačítka

switch:
  - platform: gpio
    id: tlacitko_stav
    pin: 18  # Můžeš změnit na libovolný pin pro indikaci stavu
    restore_mode: ALWAYS_OFF  # Nezůstane zapnuté po restartu, pokud je to požadováno
    name: "Stav Tlačítka"

Now everything works perfect…

8

He was lucky this time, often not the case…
Add the filters there to have little bit debounce.

9

Done, thanks very much man for your help, really appreciate it!