#include <DHT.h>

//Constants
#define DHTPIN 4     // 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() {
    delay(2000);
    // Read data and store it to variables hum and temp
    float hum = dht.readHumidity();
    float tempC = dht.readTemperature();
    float tempF = dht.readTemperature(true);

    // Check for errors
    if (isnan(hum) || isnan(tempC)) {
        Serial.println("Failed to read from DHT sensor!");
        return; // Exit the loop if reading fails
    }

    // Print temp and humidity values to serial monitor
    Serial.print("Humidity: ");
    Serial.print(hum);
    Serial.print(" %, Temp: ");
    Serial.print(tempC);
    Serial.println(" C"); 
    Serial.print(tempF);
    Serial.println(" F"); 

    if (tempC < 25) {
        digitalWrite(led, HIGH);
        Serial.println("COOL CLIMATE");
    } else {
        digitalWrite(led, LOW); // Turn off the LED if not hot
    }
    
    delay(2000); // Delay 2 sec.
}