#include <DHT.h>

#define DHTPIN 2 				// Digital pin connected to the DHT22
#define DHTTYPE DHT22 				// DHT 22 (AM2302)
DHT dht(DHTPIN, DHTTYPE);  			// Initialize DHT sensor

void setup() {
  Serial.begin(9600);
  Serial.println("DHT22 Sensor Reading...");
  dht.begin(); 					// Start the DHT sensor
}

void loop() {
  // Reading temperature and humidity
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature(); 				// Celsius
  float temperatureF = dht.readTemperature(true); 			// Fahrenheit

  									// Check if any reads failed
  if (isnan(humidity) || isnan(temperature) || isnan(temperatureF)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  // Print the results
  Serial.print("Humidity: ");      Serial.print(humidity);      Serial.print("%\t");
  Serial.print("Temperature: ");   Serial.print(temperature);   Serial.print("°C\t");
  Serial.print(temperatureF);      Serial.println("°F");

  delay(2000); 								// Delay between readings
}