const int sensorPin = A0; // Pin sensor suhu
const int relayPin = 13;  // Pin kontrol relay
const float ambangBatas = 30.0; // Suhu untuk menyalakan kipas

void setup() {
  pinMode(relayPin, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  int reading = analogRead(sensorPin);
  float voltage = reading * 5.0 / 1024.0;
  float suhu = voltage * 100.0; // Konversi ke Celcius

  Serial.print("Suhu Saat Ini: ");
  Serial.println(suhu);

  if (suhu > ambangBatas) {
    digitalWrite(relayPin, HIGH); // Kipas ON
  } else {
    digitalWrite(relayPin, LOW);  // Kipas OFF
  }
  delay(1000); // Sampling tiap 1 detik
}