#include <Keypad.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);  // 0x27 = I2C Device Address

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

byte rowPins[BARIS] = {14,12,18,19};//connect to the row pinouts of the keypad
byte colPins[KOLOM] =  {5,4,2,15};
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, BARIS, KOLOM);
void setup() {
  // put your setup code here, to run once:
 Serial.begin(9600);
 lcd.init();                      
 lcd.backlight();
 lcd.setCursor(0,0);
}

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

  if (key != NO_KEY){
    lcd.print(key);
  }
}