// tone() function:

//A sketch to demonstrate the tone() function

//Specify digital pin on the Arduino that the positive lead of piezo buzzer is attached.
int buzzer = 8;

void setup() {

  pinMode(buzzer, OUTPUT);

}//close setup

void loop() {

   tone(buzzer,261);    
    // Waits some time to turn off
    delay(200);
    //Turns the buzzer off
    noTone(buzzer); 
    // Sounds the buzzer at the frequency relative to the note D in Hz   
    tone(buzzer,293);             
    delay(200);    
    noTone(buzzer); 
    // Sounds the buzzer at the frequency relative to the note E in Hz
    tone(buzzer,329);      
    delay(200);
    noTone(buzzer);     
    // Sounds the buzzer at the frequency relative to the note F in Hz
    tone(buzzer,349);    
    delay(200);    
    noTone(buzzer); 
    // Sounds the buzzer at the frequency relative to the note G in Hz
    tone(buzzer,392);            
    delay(200);
    noTone(buzzer); 

    delayMicroseconds(500);
    noTone(buzzer);
  }