int buzzerpin = 15;

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

void loop() {
  // put your main code here, to run repeatedly:
  tone(buzzerpin,150);
  delay(1000); // this speeds up the simulation

  noTone(buzzerpin);
  delay(1000);

   tone(buzzerpin,150,1000);
  delay(1000); // this speeds up the simulation

}