#include <Keypad.h>
#include <LiquidCrystal.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 colPins[COLS] = {A1, A2, A3, A4};
uint8_t rowPins[ROWS] = {5, 4, 3, 2};

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


LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
  Serial.begin(9600);
  lcd.begin(16, 2); 
 
}

void loop() {
  char key = keypad.getKey();
  if (key != NO_KEY) {
    Serial.println(key);
    lcd.setCursor(1, 0); 
    lcd.print("   "); 
    lcd.setCursor(1, 0); 
    lcd.print(key); 
  }
}