#include <DHT.h>
#include <Wire.h>

#define DHTPIN 4
#define DHTTYPE DHT22
#define LED_PIN 2

DHT dht(DHTPIN, DHTTYPE);


void setup() {
  Serial.begin(115200);
  dht.begin();

  pinMode(LED_PIN, OUTPUT);
  Serial.println("DHT22 sensor and Led");
}

void loop() {
  delay(2000);
  
  float h = dht.readHumidity();
  float t = dht.readTemperature();
  
  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  Serial.print("Humidity: ");
  Serial.print(h);
  Serial.print(" %\t");
  Serial.print("Temperature: ");
  Serial.print(t);
  Serial.println(" *C");

  // Menghidupkan LED jika suhu lebih dari 30 derajat Celcius
  if (t > 30) {
    digitalWrite(LED_PIN, HIGH);
  } else {
    digitalWrite(LED_PIN, LOW);
  }
}