// ##############################################################
//                    DHT22 Sensor Interface                    #
// ##############################################################
// 
//  Learn DHT11 & DHT22 Interfacing with Arduino Uno (Hardware & Simulation)
// 
//  Check out the link for Code explanation and Hardware details
//  Link: 
//   http://tech.arunkumarn.in/blogs/arduino-uno/learn-dht11-and-dht22-interfacing-with-arduino-uno-step-by-step-guide/
//
// 

#include <DHT.h>

#define DHTPIN 2        // Data pin connected to Arduino Uno
#define DHTTYPE DHT22  // Change to DHT11 if using DHT11

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
  dht.begin();
}

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

  if (isnan(humidity) || isnan(temperature)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.print(" %  |  ");

  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");

  delay(2000);
}