#include <DHT.h>

#define DHTPIN 2
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);

int ledPin = 5;

void setup() {
  Serial.begin(115200);
  dht.begin();
  pinMode(ledPin, OUTPUT);
}

void loop() {
  float temperature = dht.readTemperature();
  if (isnan(temperature)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println("°C");

  if (temperature > 30) {
    digitalWrite(ledPin, HIGH);
  } else {
    digitalWrite(ledPin, LOW);
  }

  delay(2000);
}