void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(4, INPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  int value=analogRead(4);
  Serial.println(value);
  delay(100); // this speeds up the simulation
  delay(10);
}