‫#include ‫
‫ ‫
‫const byte ROWS = 4; ‫
‫const byte COLS = 4; ‫
‫ ‫
‫char hexaKeys[ROWS][COLS] = { ‫
‫ {'1', '2', '3', 'A'}, ‫
‫ {'4', '5', '6', 'B'}, ‫
‫ {'7', '8', '9', 'C'}, ‫
‫ {'*', '0', '#', 'D'} ‫
‫}; ‫
‫ ‫
‫byte rowPins[ROWS] = {9, 8, 7, 6}; ‫
‫byte colPins[COLS] = {5, 4, 3, 2}; ‫
‫ ‫
‫Keypad customKeypad = Keypad(makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS); ‫
‫ ‫
‫void setup(){ ‫
‫ Serial.begin(9600); ‫
‫} ‫
‫ ‫
‫void loop(){ ‫
‫ char customKey = customKeypad.getKey(); ‫
‫ ‫
‫ if (customKey){ ‫
‫ Serial.println(customKey); ‫
‫ } ‫
‫}