#include <Keypad.h>

// Setup keypad
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);

// Pin untuk LED
const int led1Pin = 10;
const int led2Pin = 11;
const int led3Pin = 12;

void setup() {
  pinMode(led1Pin, OUTPUT);
  pinMode(led2Pin, OUTPUT);
  pinMode(led3Pin, OUTPUT);

  digitalWrite(led1Pin, LOW); // Mulai dengan LED mati
  digitalWrite(led2Pin, LOW); // Mulai dengan LED mati
  digitalWrite(led3Pin, LOW); // Mulai dengan LED mati
}

void loop() {
  char key = keypad.getKey();

  if (key) {
    switch (key) {
      case '1':
        digitalWrite(led1Pin, HIGH); // Nyalakan LED 1
        break;
      case '2':
        digitalWrite(led2Pin, HIGH); // Nyalakan LED 2
        break;
      case '3':
        digitalWrite(led3Pin, HIGH); // Nyalakan LED 3
        break;
      case '*':
        // Matikan semua LED
        digitalWrite(led1Pin, LOW);
        digitalWrite(led2Pin, LOW);
        digitalWrite(led3Pin, LOW);
        break;
    }
  }
}