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

// Define the number of rows and columns in the keypad
const byte ROWS = 4;
const byte COLS = 4;

// Define the key mapping for the 4x4 keypad
char keys[ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};

// Define the row and column pins of the keypad
byte rowPins[ROWS] = {15, 2, 0, 4};
byte colPins[COLS] = {16, 17, 5, 18};

// Create a Keypad object
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

// Set the LCD address to 0x27 for a 16 chars and 2 line display
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  // Initialize the LCD display
  lcd.init();
  lcd.backlight();
  lcd.clear();
}

void loop() {
  // Check if a key is pressed
  lcd.clear();
  char key = keypad.getKey();
  if (key != NO_KEY) {
    // Clear the LCD display
    lcd.clear();
    // Print the pressed key on the LCD display
    lcd.print("Pressed Key: ");
    lcd.print(key);
    delay(1000);
  }
}