#include <DHT.h>

#define DHTPIN 4      
#define DHTTYPE DHT22 
#define LEDPIN 2      

DHT dht(DHTPIN, DHTTYPE);

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

void loop() {
  float temperature = dht.readTemperature();
  
  if (isnan(temperature)) {
    Serial.println("Gagal membaca dari sensor DHT!");
    return;
  }

  Serial.print("Suhu: ");
  Serial.print(temperature);
  Serial.println(" *C");

  if (temperature > 30.0) {
    digitalWrite(LEDPIN, HIGH); 
  } else {
    digitalWrite(LEDPIN, LOW);  
  }

  delay(2000); 
}