#include "DHT.h"
#define DHTPIN 3   
#define DHTTYPE DHT22  
DHT dht(DHTPIN, DHTTYPE);
int led = 7;

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

}

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

 
  if (isnan(temperature) || isnan(humidity)) {
    
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }
     if (temperature < 30 ){
       digitalWrite(led,HIGH);
     }
     if (temperature > 30 ){
       digitalWrite(led,LOW);
     }
    
  

  Serial.print(F("Humidity: "));
  Serial.print(humidity);
  Serial.print(F("%  Temperature: "));
  Serial.print(temperature);
  Serial.print(F("°C "));

  delay(2000);
}