Penggunaan Keypad 4x4 dengan LCD Arduino Script silahkan copy paste dibawah ini: #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x27,16,2); // Include Keypad library #include <Keypad.h> // Constants for row and column sizes const byte ROWS = 4; const byte COLS = 4; // Array untuk menjelaskan kunci di keypad char hexaKeys[ROWS][COLS] = { {'1', '2', '3', 'A'}, {'4', '5', '6', 'B'}, {'7', '8', '9', 'C'}, {'*', '0', '#', 'D'} }; // Koneksi ke Arduino byte rowPins[ROWS] = {9, 8, 7, 6}; byte colPins[COLS] = {5, 4, 3, 2}; // Buat object keypad Keypad customKeypad = Keypad(makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS); void setup(){ // Setup LCD dengan backlight dan initialize lcd.backlight(); lcd.init(); } void loop(){ // Get key value if pressed char customKey = customKeypad.getKey(); if (customKey){ // Be...