#include <Keypad.h>

const byte row_num = 4;
const byte col_num = 4;
char keys [row_num][col_num] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'},
};
byte row_pin [row_num] = {13,12,11,10};
byte col_pin [col_num] = {9,8,7,6};

Keypad keypad= Keypad (makeKeymap(keys),row_pin,col_pin,row_num,col_num);





void setup() {
  serial.begin(9600);
}

void loop() {
  char tipka = keyboard.getKey();
  if (key {
    Serial.print("pritisnjenja tipka: ");
    Serial.print(key);
  })

}