int led1 = 11;
int led2 = 12;
int led3 = 13;
int btn = A0;

void setup() {
  Serial.begin(9600);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(btn, INPUT);
}

void loop() {
  int kondisiTombol = digitalRead(btn);

  if (kondisiTombol == LOW) {
    Serial.println("Tombol Nilai 0");
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
  } else {
    Serial.println("Tombol Nilai 1");
    
    // Pola bergantian: LED 1 menyala, lainnya mati
    digitalWrite(led1, HIGH);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
    delay(500); // Tunda 0,5 detik

    // Pola bergantian: LED 2 menyala, lainnya mati
    digitalWrite(led1, LOW);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, LOW);
    delay(500); // Tunda 0,5 detik

    // Pola bergantian: LED 3 menyala, lainnya mati
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
    digitalWrite(led3, HIGH);
    delay(500); // Tunda 0,5 detik
  }

  // Tunda utama agar tombol tidak terbaca terlalu cepat
  delay(200);
}


  // put your main code here, to run repeatedly:
// lampu 1
//digitalWrite(led1, HIGH);
//Serial.println("lampu 1 menyala");
//digitalWrite(led2, LOW);
//Serial.println("lampu 2 mati");
//digitalWrite(led3, HIGH);
//Serial.println("lampu 3 menyala");
//delay(1000);
//digitalWrite(led1, LOW);
//Serial.println("lampu 1 mati");
//digitalWrite(led2, HIGH);
//Serial.println("lampu 2 menyala");
//digitalWrite(led3, LOW);
//Serial.println("lampu 3 mati");
//delay(1000);