/* How to use DHT-11 sensor with Arduino uno
   Temperature and humidity sensor
   Dev: Michalis Vasilakis // Date: 1/7/2015 // www.ardumotive.com */

//Libraries
#include <DHT.h>

//Constants
#define DHTPIN 2     // what pin we're connected to
#define DHTTYPE DHT11   // DHT 11  (AM2302)
// Initialize DHT sensor for normal 16mhz Arduino
DHT dht(DHTPIN, DHTTYPE);

//Variables
int led=13;
int chk;
float hum;  //Stores humidity value
float temp; //Stores temperature value

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

void loop()
{
    //Read data and store it to variables hum and temp
    hum = dht.readHumidity();
    temp= dht.readTemperature();
    //Print temp and humidity values to serial monitor
    Serial.print("Humidity: ");
    Serial.print(hum);
    Serial.print(" %, Temp: ");
    Serial.print(temp);
    Serial.println(" Celsius");
    digitalWrite(led, LOW);
    if (temp>2)
    {
      digitalWrite(led, HIGH);
      Serial.print("");
      Serial.print(" HOT CLIMATE");
    }
    
    delay(2000); //Delay 2 sec.
}