#include <Arduino.h>

// Define the pins for the buzzer or speaker
#define BUZZER_PIN 2

// Define note frequencies (C major scale)
#define NOTE_C4  261
#define NOTE_D4  294
#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 durations
#define WHOLE_NOTE 1000  // 1 second
#define HALF_NOTE 500    // Half of a whole note
#define QUARTER_NOTE 250 // Quarter of a whole note
#define EIGHTH_NOTE 125  // Eighth of a whole note

// Define a simple melody (like "Twinkle, Twinkle, Little Star")
int melody[] = {
  NOTE_C4, NOTE_C4, NOTE_G4, NOTE_G4, NOTE_A4, NOTE_A4, NOTE_G4,
  NOTE_F4, NOTE_F4, NOTE_E4, NOTE_E4, NOTE_D4, NOTE_D4, NOTE_C4,
  NOTE_G4, NOTE_G4, NOTE_F4, NOTE_F4, NOTE_E4, NOTE_E4, NOTE_D4,
  NOTE_G4, NOTE_G4, NOTE_F4, NOTE_F4, NOTE_E4, NOTE_E4, NOTE_D4,
  NOTE_C4, NOTE_C4, NOTE_G4, NOTE_G4, NOTE_A4, NOTE_A4, NOTE_G4,
  NOTE_F4, NOTE_F4, NOTE_E4, NOTE_E4, NOTE_D4, NOTE_D4, NOTE_C4,
};

// Define corresponding note durations (rhythm pattern)
int noteDurations[] = {
  QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, HALF_NOTE,
  QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, HALF_NOTE,
  QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, HALF_NOTE,
  QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, HALF_NOTE,
  QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, HALF_NOTE,
  QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, QUARTER_NOTE, HALF_NOTE,
};

// Play the melody
void setup() {
  for (int i = 0; i < sizeof(melody) / sizeof(int); i++) {
    int note = melody[i];
    int duration = noteDurations[i];

    tone(BUZZER_PIN, note, duration); // Play the note
    delay(duration * 1.3); // Add a slight pause between notes

    noTone(BUZZER_PIN); // Stop the tone
  }
}

void loop() {
  // No loop needed for a simple melody
}