int button1 = 4;
int button2 = 2;
int led = 14;
bool ChekLed = false; 

void setup() {
  pinMode(button1, INPUT);
  pinMode(button2, INPUT);
  pinMode(led, OUTPUT);
}

void loop() {
  int nilaibutton1 = digitalRead(button1);
  int nilaibutton2 = digitalRead(button2);

  // Jika tombol 1 ditekan dan LED kondsi false maka jalan kan program
  if (nilaibutton1 == 1 && !ChekLed) {
    digitalWrite(led, HIGH); // Nyalakan LED
    ChekLed = true; // Setel status LED aktif
    delay(3000); // Tunggu selama 3 detik
    digitalWrite(led, LOW); // Matikan LED
  }

  // Jika tombol 2 ditekan,
  if (nilaibutton2 == 1 && ChekLed) {
    digitalWrite(led, HIGH);
    ChekLed = true;
    delay(3000);
    digitalWrite(led, LOW);
  }
}