#include <Wire.h>
#include <LiquidCrystal_I2C.h>

// Initialize the LCD display
LiquidCrystal_I2C lcd(0x27, 16, 2); // Change 0x27 to your LCD I2C address

const int ldrPin = A0;    // LDR sensor pin
const int buzzerPin = 2;  // Buzzer pin

void setup() {
  lcd.begin(16, 2); // Initialize the LCD with 16 columns and 2 rows
  lcd.backlight();  // Turn on the LCD backlight

  pinMode(buzzerPin, OUTPUT); // Set the buzzer pin as an output
  noTone(buzzerPin);          // Ensure the buzzer is initially off
}

void loop() {
  // Read the value from the LDR sensor
  int ldrValue = analogRead(ldrPin);

  // Map the LDR sensor value to a range suitable for the buzzer frequency (modify as needed)
  int frequency = map(ldrValue, 0, 1023, 200, 2000);

  // Display the LDR sensor value on the LCD
  lcd.clear();
  lcd.print("LDR Value:");
  lcd.setCursor(0, 1);
  lcd.print(ldrValue);

  // Generate a tone on the buzzer with the mapped frequency
  tone(buzzerPin, frequency, 100); // The second argument is the duration of the tone in milliseconds

  delay(100); // Add a small delay for stability (adjust as needed)
}