Playing Music with Arduino – Happy Birthday | Task 5


Work with the passive buzzer. Create a melody using the “tone” command.

The circuit for a passive buzzer is the same as the active buzzer. The only difference is the leg lengths, a passive buzzer can be wired with either pin going to ground.


buzzer_wiring 



// Happy Birthday Melody using tone() and noTone()
int buzzPin = 8;
int dt = 500;

#define NOTE_C4 262
#define NOTE_E4 330
#define NOTE_F4 349
#define NOTE_G4 392
#define NOTE_A4 440
#define NOTE_B4 494
#define NOTE_C5 523
#define NOTE_D4 294

int melody[] = {
  NOTE_C4, NOTE_C4, NOTE_D4, NOTE_C4, NOTE_F4, NOTE_E4, NOTE_C4, NOTE_C4,
  NOTE_D4, NOTE_C4, NOTE_G4, NOTE_F4, NOTE_E4, NOTE_D4, NOTE_C4,
  NOTE_C5, NOTE_A4, NOTE_F4, NOTE_E4, NOTE_D4, NOTE_B4, NOTE_B4,
  NOTE_A4, NOTE_F4, NOTE_G4, NOTE_F4
};

int noteDurations[] = {
  8, 8, 4, 4, 4, 2, 8, 8,
  4, 4, 4, 2, 8, 8,
  4, 4, 4, 4, 4, 8, 8,
  4, 4, 4, 2
};

int songLength = sizeof(melody) / sizeof(melody[0]);
int thisNote;

int noteDuration = 1000/noteDurations[thisNote];
int pauseBetweenNotes = noteDuration *1.30;

void setup() {
  // put your setup code here, to run once:
for (thisNote = 0; thisNote < songLength; thisNote++) {
  noteDuration = 1000/noteDurations[thisNote];
  tone(buzzPin,melody[thisNote], noteDuration);
  pauseBetweenNotes = noteDuration * 1.30;
  delay(pauseBetweenNotes);
  noTone(buzzPin);
}
}

void loop() {
  // put your main code here, to run repeatedly:

}

Try using the frequency chart to create a new song.

buzzer_wiring