KEYPAD CODE

#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins

LiquidCrystal lcd(8, 9, 10, 11, 12, 13);//RS,EN,D4,D5,D6,D7

#include <Keypad.h>//header for keypad commands enabling

const byte ROWS = 4; // Four rows

const byte COLS = 4; // Three columns

// Define the Keymap

char keys[ROWS][COLS] = {

  {'1','2','3','A'},

  {'4','5','6','B'},

  {'7','8','9','C'},

  {'#','0','*','D'}

};

// Connect keypad ROW0, ROW1, ROW2 and ROW3 to these Arduino pins.

byte rowPins[ROWS] = { 0, 1, 2, 3 };

// Connect keypad COL0, COL1 and COL2 to these Arduino pins.

byte colPins[COLS] = { 4, 5, 6, 7 };

//  Create the Keypad

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

void setup()

{

  for(int k=8;k<14;k++)

  {

    pinMode(k,OUTPUT);//pins 8-14 are enabled as output

  }

  lcd.begin(16, 2);//initializing LCD

}

void loop()

{

  char key = kpd.getKey(); //storing pressed key value in a char

  if (key != NO_KEY)

{

      lcd.print(key); //showing pressed character on LCD

  }

}