ESP32 S3 BOX lite buttons

ESPHome
1

Hi,
I’m trying to crack my esp32 s3 box lite buttons: https://fr.aliexpress.com/item/1005004441701974.html . The device has 3 buttons connected to ADC pin 1 so I can read them using this config:

sensor:
  - platform: adc
    id: button_adc
    pin: 1
    update_interval: .2s
    attenuation: auto

button 1 when pressed reads 2.4360V
button 2 when pressed reads between 2.006 and 1.990V
button 3 when pressed reads 0.8262V

when released the reading is 3.1554V

Is there a way to use that info and make working buttons?
Thanks

2

I have cracked it - that code seems to do the trick:

sensor:
  - platform: adc
    id: button_adc
    pin: 1
    update_interval: 200ms
    attenuation: auto

binary_sensor:
  - platform: template
    name: "Button 1"
    id: button_1
    lambda: |-
      if (id(button_adc).state > 2.2 && id(button_adc).state < 3.005){
        return true;
      } else {
        return false;
      }

  - platform: template
    name: "Button 2"
    id: button_2
    lambda: |-
      if (id(button_adc).state > 1.8 && id(button_adc).state < 2.1) {
        return true;
      } else {
        return false;
      }

  - platform: template
    name: "Button 3"
    id: button_3
    lambda: |-
      if (id(button_adc).state > 0.8 && id(button_adc).state < 1.8){
        return true;
      } else {
        return false;
      }
2 Likes
3

Thanks for this!
I made the version below to handle simultaneous button presses. The voltage ranges are a bit narrow, so hopefully the values don’t vary between devices or power supplies.

sensor:
  - platform: adc
    id: button_adc
    pin: 1
    update_interval: 200ms
    attenuation: auto

binary_sensor:
  - platform: template
    name: "Button 1"
    id: button_1
    lambda: |-
      if ( (id(button_adc).state > 2.2 && id(button_adc).state < 2.76) ||
      (id(button_adc).state > 1.22 && id(button_adc).state < 1.81) ||
      (id(button_adc).state > 0.73 && id(button_adc).state < 0.79) || 
      id(button_adc).state < 0.68 ) {
        return true;     
      } else {  
        return false;
      }
  - platform: template
    name: "Button 2"
    id: button_2
    lambda: |-
      if ( (id(button_adc).state > 1.22 && id(button_adc).state < 2.20) || 
      id(button_adc).state < 0.73 ) {
        return true;
      } else {
        return false;
      }
  - platform: template
    name: "Button 3"
    id: button_3
    lambda: |-
      if ( id(button_adc).state < 1.22) {
        return true;
      } else {
        return false;
      }
4

How did you disable the reset function of the button on the lower left?

5

I don’t think you can - that’s hardwired to the reset button on the board

6

did you manage to get the microphone working on your esp32 s3 box lite?