#include <Keypad.h>
const uint8_t ROWS = 4;
const uint8_t COLS = 4;
char keys[ROWS][COLS] = {
  { '1', '2', '3', 'A' },
  { '4', '5', '6', 'B' },
  { '7', '8', '9', 'C' },
  { '*', '0', '#', 'D' }
};
uint8_t rowPins[ROWS] = { 23, 19, 18, 5 };
uint8_t colPins[COLS] = { 25, 26, 27, 14};

#include <LiquidCrystal_I2C.h>
#define I2C_ADDR    0x27
#define LCD_COLUMNS 16
#define LCD_LINES   2
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

int lcdcol = 0, lcdrow = 0;


Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

void setup() {
  Serial.begin(115200);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
}

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

  if (key != NO_KEY) {
    Serial.println(key);

    if(lcdcol >= 16)
    {
      lcdrow++;

      if(lcdrow > 1)
      {
        lcdrow = 0;
        lcdcol = 0;
        lcd.clear();
      }
      lcdcol = 0;
    }
    lcd.setCursor(lcdcol, lcdrow);
    lcd.print(key);
    lcdcol++;


  }
}