const int tombol = 18;

const int led1 = 25;
const int led2 = 26;
const int led3 = 27;

const int buzzer = 23;

void setup() {
  pinMode(tombol, INPUT_PULLUP);

  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);

  pinMode(buzzer, OUTPUT);

  // Kondisi awal
  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
  digitalWrite(led3, LOW);
  noTone(buzzer);r
}

void loop() {

  // Tombol ditekan
  if (digitalRead(tombol) == LOW) {

    // Emergency aktif selama 5 detik
    unsigned long waktuMulai = millis();

    while (millis() - waktuMulai < 5000) {

      // LED 1
      digitalWrite(led1, HIGH);
      digitalWrite(led2, LOW);
      digitalWrite(led3, LOW);
      tone(buzzer, 1000);
      delay(100);

      // LED 2
      digitalWrite(led1, LOW);
      digitalWrite(led2, HIGH);
      digitalWrite(led3, LOW);
      tone(buzzer, 1500);
      delay(100);

      // LED 3
      digitalWrite(led1, LOW);
      digitalWrite(led2, LOW);
      digitalWrite(led3, HIGH);
      tone(buzzer, 2000);
      delay(100);
    }

    // Setelah 5 detik, semua mati
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
    noTone(buzzer);

    // Tunggu sampai tombol dilepas
    while (digitalRead(tombol) == LOW) {
      delay(10);
    }
  }
}