/* Arduino tutorial - Buzzer / Piezo Speaker
   More info and circuit: http://www.ardumotive.com/how-to-use-a-buzzer-en.html
   Dev: Michalis Vasilakis // Date: 9/6/2015 // www.ardumotive.com */

const int buzzer = 9; //buzzer to arduino pin 9

void setup(){
  pinMode(buzzer, OUTPUT); // Set buzzer - pin 9 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
}