Analog read pin on the 7" display ESP32 board

HansTis

Completely new to this display, can someone explain to me how to wire an analog input (0-3 volt)? And is there a simple (demo) sketch for output to the serial monitor?

Elecrow

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

Thanks for your advice!