// C++ code // #include <Adafruit_LiquidCrystal.h> #include <Keypad.h> #include <Servo.h> Adafruit_LiquidCrystal lcd(0); Servo servo; const byte numRow = 4 ; const byte numCols = 4 ; char keymap [numRow][numCols] = { {'1','2','3','A'}, {'4','5','6','B'}, {'7','8','9','C'}, {'*','0','#','D'}, }; byte rowPins[numRow] = {9,8,7,6}; byte colPins[numCols] = {5,4,3,2}; Keypad keypad = Keypad (makeKeymap(keymap),rowPins , colPins ,numRow ,numCols); char password[4]; void setup() { servo.attach(11); servo.write(0); lcd.begin(16,2); lcd.setCursor(0,0); lcd.print("set 4 character "); lcd.setCursor(0,1); lcd.print("password: "); for (int i = 0 ; i<4 ; i++){ password[i]= keypad.waitForKey(); } } void loop () { lc...
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