บทเรียนที่ไม่มีชื่อ

By TORI TORI

#include <Keypad.h>

const byte ROWS = 4;

const byte COLS = 4;

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

void setup()

{

Serial.begin(9600);

}

void loop()

{

char key = keypad.getKey();

if (key != NO_KEY)

{

Serial.println(key);

}

}