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

void loop() {
  // put your main code here, to run repeatedly:
  tone(4, 262);
  delay(1000); // this speeds up the simulation
  tone(4, 294);
  delay(1000);
  tone(4, 330);
  delay(1000);
  tone(4, 349);
  delay(1000);
  tone(4, 395);
  delay(1000);
  tone(4, 440);
  delay(1000);
  tone(4, 494);
  delay(1000);
  tone(4, 523);
  delay(1000);
  tone(4, 523);
  delay(1000);
  tone(4, 494);
  delay(1000);
  tone(4, 440);
  delay(1000);
   tone(4, 395);
  delay(1000);
  tone(4, 349);
  delay(1000);
  tone(4, 330);
  delay(1000);
  tone(4, 294);
  delay(1000);
  tone(4, 262);
  delay(1000); 
}