int buzzer = 2; //deklarasi pin buzzer

void setup() {
  // put your setup code here, to run once:
  pinMode(buzzer, OUTPUT); //setup pin buzzer menjadi output
}

void loop() {
  // put your main code here, to run repeatedly:
  tone(buzzer, 262); //membunyikan buzzer sebesar 200Hz, boleh diubah-ubah sesuai dengan keinginan, semakin tinggi frekuensi semakin tinggi pula suara buzzernya
  delay(500);
  tone(buzzer, 294);
  delay(500);
  tone(buzzer, 330);
  delay(500);
  tone(buzzer, 349);
  delay(500);
  tone(buzzer, 395);
  delay(500);
  tone(buzzer, 440);
  delay(500);
  tone(buzzer, 494);
  delay(500);
  tone(buzzer, 523);
  delay(500);
}