Unit 5: Audible Signals

Code:


 
const int BUZZER_PIN = 8;  // Digital pin for active buzzer
 
// Notes of the melody
const int NOTE_C4 = 262;
const int NOTE_D4 = 294;
const int NOTE_E4 = 330;
const int NOTE_F4 = 349;
const int NOTE_G4 = 392;
const int NOTE_A4 = 440;
const int NOTE_B4 = 494;
const int NOTE_C5 = 523;
 
// Melody to play
int melody[] = {
  NOTE_G4, NOTE_G4, NOTE_E4, NOTE_A4, NOTE_G4, NOTE_E4, NOTE_F4, NOTE_G4,
  NOTE_G4, NOTE_E4, NOTE_A4, NOTE_G4, NOTE_E4
};
 
// Duration of each note (in ms)
int noteDurations[] = {
  500, 500, 500, 500, 500, 500, 500, 500,
  500, 500, 500, 500, 500
};
 
// Function to play the melody
void playMelody() {
  for (int i = 0; i < sizeof(melody) / sizeof(int); i++) {
    tone(BUZZER_PIN, melody[i], noteDurations[i]);
    delay(noteDurations[i] * 1.3); // Delay between notes
  }
}
 
void setup() {
  pinMode(BUZZER_PIN, OUTPUT);  // Set buzzer pin as output
}
 
void loop() {
  // Play the melody
  playMelody();
}
Unit 5: Audible Signals

Code:

Notes:
