#include <DHT.h>

#define DHTPIN 4         // Pin data DHT22
#define DHTTYPE DHT22    // Tipe sensor DHT
DHT dht(DHTPIN, DHTTYPE);

#define RELAY_1_PIN 2    // Pin untuk relay blower 1
#define RELAY_2_PIN 3    // Pin untuk relay blower 2

void setup() {
  pinMode(RELAY_1_PIN, OUTPUT);
  pinMode(RELAY_2_PIN, OUTPUT);
  digitalWrite(RELAY_1_PIN, LOW); // Blower 1 mati
  digitalWrite(RELAY_2_PIN, LOW); // Blower 2 mati
  
  Serial.begin(9600);
  dht.begin();

  Serial.println("Sistem monitoring suhu dimulai...");
}

void loop() {
  float temperature = dht.readTemperature();

  if (isnan(temperature)) {
    Serial.println(F("Gagal membaca suhu dari sensor DHT!"));
    return;
  }

  // Menampilkan suhu di Serial Monitor
  Serial.print(F("Suhu: "));
  Serial.print(temperature);
  Serial.println(F(" C"));

  // Logika relay berdasarkan suhu
  if (temperature > 50) {
    digitalWrite(RELAY_1_PIN, HIGH);  // Blower 1 menyala
    digitalWrite(RELAY_2_PIN, HIGH); // Blower 2 menyala
    Serial.println(F("Blower 1: ON, Blower 2: ON"));
  } else if (temperature > 30) {
    digitalWrite(RELAY_1_PIN, HIGH);  // Blower 1 menyala
    digitalWrite(RELAY_2_PIN, LOW);  // Blower 2 mati
    Serial.println(F("Blower 1: ON, Blower 2: OFF"));
  } else if (temperature < 25) {
    digitalWrite(RELAY_1_PIN, LOW);  // Blower 1 mati
    digitalWrite(RELAY_2_PIN, LOW);  // Blower 2 mati
    Serial.println(F("Blower 1: OFF, Blower 2: OFF"));
  }

  delay(2000); // Tunggu 2 detik sebelum pembacaan berikutnya
}