void setup() {
  
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(2,OUTPUT);
  pinMode(33, OUTPUT);
  pinMode(33, OUTPUT);
}


void loop() {
  
  digitalWrite(2, HIGH);
  digitalWrite(33, HIGH);
  delay(1000);
  digitalWrite(2, LOW);
  digitalWrite(33, LOW);
  delay(1000);
  int vol = analogRead(13);
  Serial.println(vol);
  vol = map ( vol,0,4095,0,255);
  analogWrite(34,vol);
  
}