Analog read pin on the 7" display ESP32 board

Comments

• Elecrow

  July 16 edited July 16

  Hello @HansTis ,
  To read analog value, you need an ADC pin, but there is no available ADC pin. However, if you don't need to use a speaker, you can use GPIO17 pin as ADC input pin to read analog value.
  Use the following code:
  #define A_pin 17

      void setup()
      {
      setMode(A_pin, INPUT);
      }
  
      void loop()
      {
      int A_value = 0;
      A_value = digitalRead(A_Pin);
      Serial.println(A_value);
      delay(1000);
      }
  
• HansTis

  July 21

  Thanks for your advice!