buzzer.ino

const int buzzer = 8; //buzzer to arduino pin 8

void setup(){ 
  pinMode(buzzer, OUTPUT); // Set buzzer - pin 8 as an output
}

void loop(){
 
  tone(buzzer, 1000); // Send 1KHz sound signal...
  delay(1000);        // for 1 sec
  noTone(buzzer);     // Stop sound
  delay(1000);        // for 1sec
  
}