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

LiquidCrystal_I2C lcd(0X27, 20, 4);
#define I2C_ADDR    0x29
#define LCD_COLUMNS 16
#define LCD_LINES   2

const byte rows = 4;
const byte cols = 4;

char keys [rows][cols] = 
{{ '1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}};

  byte rowpin[rows] = { 13,12,11,10};
  byte colpin[cols] = {9,8,7,6};

   Keypad keypad = Keypad( makeKeymap(keys), rowpin, colpin, rows, cols);



void setup() {
   Serial.begin(115200);


   lcd.init();
   lcd.backlight();
   lcd.begin(16, 2);

      lcd.print("Enter Number:");

      delay(3000);

      lcd.clear();


}

void loop() {
  char key = keypad.getKey();
   
   if (key != NO_KEY){

    //lcd.setCursor(0, 0);
		lcd.print(key);
    Serial.println(key);

    }

}