#include <Wire.h>

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(1, 2, 4, 5, 6, 7);

#include <Keypad.h>

const byte ROWS = 4; 
const byte COLS = 4; 

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

byte rowPins[ROWS] = {23, 25, 27, 29}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {33, 35, 37}; //connect to the column pinouts of the keypad

Keypad customKeypad = Keypad(makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);

LiquidCrystal_IC2 lcd(0x3F, 16, 2);

void setup() {

  lcd.backlight();
  lcd.init();

}

void loop() {

  char customKey = customKeypad.getkey();
  
  if(customKey){
  
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print(customKey;);

  }
}