#include "DHT.h"
#define DHTPIN 15
#define DHTTYPE DHT11   // DHT 11
//#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321
//#define DHTTYPE DHT21   // DHT 21 (AM2301)
DHT dht(DHTPIN, DHTTYPE);
void setup() {
  Serial.begin(9600);
  Serial.println("DHT11 test!");
  dht.begin();
}
void loop() {
  // Wait a few seconds between measurements.
  delay(2000);
  float h = dht.readHumidity();
  // Read temperature as Celsius (the default)
  float t = dht.readTemperature();
  // Read temperature as Fahrenheit (isFahrenheit = true)
  float f = dht.readTemperature(true);
  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }
  // Compute heat index in Fahrenheit (the default)
  float hif = dht.computeHeatIndex(f, h);
  // Compute heat index in Celsius (isFahreheit = false)
  float hic = dht.computeHeatIndex(t, h, false);
  Serial.print("Humidity: ");
  Serial.print(h);
  Serial.println(" %\t");
  Serial.print("Temperature: ");
  Serial.print(t);
  Serial.print(" *C or ");
  Serial.print(f);
  Serial.println(" *F\t");
  Serial.print("Heat index: ");
  Serial.print(hic);
  Serial.print(" *C or ");
  Serial.print(hif);
  Serial.println(" *F");
  Serial.println("================================");
}