This is a very basic example for the ESP32 board, the only reason for this is to show that unlike the ESP8266 boards the ESP32 has more than one Analog pins – in fact it has 12 analog pins
Once you have added ESP32 support to the Arduino IDE then select the Wemos Lolin 32 board and the correct port.
Code
int analog0;
int analog1;
int analog2;
int analogVal0 = 0;
int analogVal1 = 0;
int analogVal2 = 0;
void setup()
{
Serial.begin(9600); // use the serial port to send the values back to the computer
}
void loop()
{
analogVal0 = analogRead(analog0); // read the value from the sensor
analogVal1 = analogRead(analog1);
analogVal2 = analogRead(analog2);
Serial.println("analogVal0"); // print the value to the serial port
Serial.println(analogVal0);
Serial.println("analogVal1"); // print the value to the serial port
Serial.println(analogVal1);
Serial.println("analogVal2"); // print the value to the serial port
Serial.println(analogVal2);
}
Output
Open the serial monitor and you should see something like this
analogVal0
404
analogVal1
384
analogVal2
364
analogVal0
416
analogVal1
393
analogVal2
368
