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

// Define the I2C address of the LCD
#define LCD_I2C_ADDRESS 0x3F

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

// Define the symbols on your keypad buttons
char hexaKeys[ROWS][COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};

// Create a Keypad object
Keypad customKeypad = Keypad(makeKeymap(hexaKeys), ROWS, COLS, ROWS, COLS);

// Create an LCD object
LiquidCrystal_I2C lcd(LCD_I2C_ADDRESS, 16, 2); // 16x2 LCD

void setup() {
  Wire.begin(); // Initialize I2C communication
  lcd.init();   // Initialize the LCD
  lcd.backlight();

  Serial.begin(9600);
}

void loop() {
  char key = customKeypad.getKey(); // Read the keypad
  if (key) {
    lcd.setCursor(0, 1); // Set the cursor to the second line
    lcd.print("DEDY ARYANTO " + String(key)); // Display the key on the LCD
    Serial.println("DEDY ARYANTO" + String(key)); // Print the key to the serial monitor
    delay(1000); // Delay for one second
    lcd.clear(); // Clear the LCD screen
    lcd.setCursor(1, 1); // Set the cursor to the second line
    lcd.print("201020100027 " + String(key)); // Display the key on the LCD
    Serial.println("201020100027" + String(key)); // Print the key to the serial monitor
    delay(1000); // Delay for one second
    lcd.clear(); // Clear the LCD screen
  }
}