#include <Keypad.h>
#include <LiquidCrystal.h>
LiquidCrystal lcd(12,11,15,16,17,18);

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] = { 5,4,3,2 };
uint8_t rowPins[ROWS] = { 9,8,7,6 };
 
 Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

void setup() {
  Serial.begin(9600);
  lcd.begin(16,2);
  lcd.setCursor(0,0);
  lcd.print("keypad test");
  // put your setup code here, to run once:

}

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

  if (key != NO_KEY){
    Serial.println(key);
    lcd.setCursor(0,1);
    lcd.print(key);
  }
  // put your main code here, to run repeatedly:

}