#include <LiquidCrystal_I2C.h>  // Include the I2C LCD library

// Initialize the LCD (change 0x27 to your I2C address, 16x2 for columns and rows)
LiquidCrystal_I2C lcd(0x27, 16, 2);

const int buzzerPin = 8;  // Buzzer connected to pin 8

// Amazing Grace melody notes (in Hz) and durations (in ms)
int melody[] = {392, 440, 392, 349, 392, 294, 349, 392, 440, 392, 294, 392, 
  349, 294, 262, 294, 349, 392, 440, 392, 294, 262};

int noteDurations[] = {500, 500, 500, 500, 750, 500, 750, 500, 500, 500, 500, 500,
  750, 500, 500, 500, 500, 500, 750, 500, 500, 1000};

void setup() {
  // Initialize the LCD
  lcd.init();
  lcd.backlight();
  lcd.print("Amazing Grace");  // Display initial message
  delay(2000);                // Wait 2 seconds
  lcd.clear();

  // Initialize the buzzer pin
  pinMode(buzzerPin, OUTPUT);
}

void loop() {
  // Play each note in the melody
  for (int i = 0; i < sizeof(melody) / sizeof(melody[0]); i++) {
    int noteDuration = noteDurations[i];

    // Play the current note on the buzzer
    tone(buzzerPin, melody[i], noteDuration);

    // Display the note frequency on the LCD
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Playing Note:");
    lcd.setCursor(0, 1);
    lcd.print(melody[i]);  // Print the current frequency in Hz

    // Wait for the note to finish
    delay(noteDuration * 1.3);

    // Stop the tone
    noTone(buzzerPin);
  }

  // Wait 2 seconds before replaying the melody
  lcd.clear();
  lcd.print("Restarting...");
  delay(2000);
}