int flamePin = 2;   // Pin sensor api (DO)
int pumpPin  = 10;  // LED sebagai simulasi pompa

void setup() {
  pinMode(flamePin, INPUT);
  pinMode(pumpPin, OUTPUT);

  spray.attach(9);
  spray.write(90); // posisi awal servo

  digitalWrite(pumpPin, LOW); // pompa mati
}

void loop() {
  int flame = digitalRead(flamePin);

  // Sensor flame: LOW = api terdeteksi
  if (flame == LOW) {
    digitalWrite(pumpPin, HIGH); // pompa ON

    // servo menyemprot kiri-kanan
    for (int pos = 60; pos <= 120; pos++) {
      spray.write(pos);
      delay(10);
    }
    for (int pos = 120; pos >= 60; pos--) {
      spray.write(pos);
      delay(10);
    }

  } else {
    digitalWrite(pumpPin, LOW); // pompa OFF
    spray.write(90); // posisi netral
  }

  delay(100);
}