#include <DHT.h>

#define DHTPIN 2          // Pin data DHT22 terhubung ke pin 2 Arduino
#define DHTTYPE DHT22     // Tipe sensor DHT yang digunakan

DHT dht(DHTPIN, DHTTYPE);

const int relayPin = 3;  // Pin relay terhubung ke pin 3 Arduino
const int ledPin = 13;   // Pin LED terhubung ke pin 13 Arduino

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

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

  if (isnan(humidity) || isnan(temperature)) {
    Serial.println("Gagal membaca sensor DHT22!");
    return;
  }

  Serial.print("Kelembapan: ");
  Serial.print(humidity);
  Serial.print("%\t");
  Serial.print("Suhu: ");
  Serial.print(temperature);
  Serial.println("°C");

  // Kontrol relay berdasarkan nilai kelembapan
  if (humidity > 80) {
    digitalWrite(relayPin, HIGH);  // Aktifkan relay
    digitalWrite(ledPin, HIGH);    // Nyalakan LED
  } else {
    digitalWrite(relayPin, LOW);   // Matikan relay
    digitalWrite(ledPin, LOW);     // Matikan LED
  }

  delay(2000);  // Delay 2 detik sebelum membaca sensor lagi
}