#include <DHT.h>
#define DHTPIN 2
#define DHTTYPE DHT22
DHT dht(DHTPIN,DHTTYPE);
#define RED_LED 18
#define GREEN_LED 21
void setup()
{
  Serial.begin(9600);
  pinMode(RED_LED,OUTPUT);
  pinMode(GREEN_LED,OUTPUT);
}
void loop()
{
  float t=dht.readTemperature();
  if(isnan(t) )
  {
    Serial.println(F("Fail to read from DHT sensor"));
    return;
  }
  Serial.print("Temperature :");
  Serial.println(t);
  if(t>30){
    digitalWrite(RED_LED, HIGH);
    digitalWrite(GREEN_LED, LOW);
  }
  else{
    digitalWrite(RED_LED, LOW);
    digitalWrite(GREEN_LED, HIGH);
  }
  delay(1000);
}