ESP32 KeyPad
.. ชลิตา จูมสีมา : เขียน Library: https://github.com/Chris--A/Keypad ตัวอย่างโค้ด: #include <Keypad.h> const byte ROWS = 4; //four rows const byte COLS = 4; //three columns char keys[ROWS][COLS] = { {'1','2','3','A'}, {'4','5','6','B'}, {'7','8','9','C'}, {'*','0','#','D'} }; byte rowPins[ROWS] = {13, 12, 14, 27}; //connect to the row pinouts of the keypad byte colPins[COLS] = {26, 25, 33, 32}; //connect to the column pinouts of the keypad Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS ); void setup(){ Serial.begin(115200); } void loop(){ char key = keypad.getKey(); if (key){ Serial.print(key); } } ..