#include "DHT.h"
#define DHTPIN 2
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321
DHT dht(DHTPIN, DHTTYPE);
int fan = 8;
int fan2 = 12;
void setup() 
{
  Serial.begin(9600);
  Serial.println(F("DHTxx test!"));
  dht.begin();
  pinMode(fan, OUTPUT);
}

void loop() 
{
  delay(2000);
  float h = dht.readHumidity();
  float t = dht.readTemperature();
  float f = dht.readTemperature(true);

  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }
  Serial.print(F("Humidity: "));
  Serial.print(h);
  Serial.print(F("%  Temperature: "));
  Serial.print(t);
  Serial.print(F("°C "));
  if (t >= 30  )
  {
    digitalWrite(fan, HIGH);
    delay(100);
  }
  else
  {
  digitalWrite(fan, LOW);
  }
  if(t <=0)
  {
   digitalWrite(fan2, HIGH);
   delay(100);
  }
  else
  {
  digitalWrite(fan2, LOW);
  }
}