#include "DHT.h"
#define DHTPIN 12 
#define DHTTYPE DHT22 
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
  Serial.println(F("DHTxx test!"));
  pinMode(5, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(2, OUTPUT);
  dht.begin();
}

void loop() {
  // Wait a few seconds between measurements.
  delay(2000);

  float h = dht.readHumidity();
  float t = dht.readTemperature();
  float f = dht.readTemperature(true);

  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  float hif = dht.computeHeatIndex(f, h);
  float hic = dht.computeHeatIndex(t, h, false);

if(hic < 27){
   digitalWrite(5, HIGH);
   digitalWrite(4, LOW);
   digitalWrite(3, LOW);
   digitalWrite(2, LOW);
}
else if(hic>= 27 && hic < 32){
   digitalWrite(5, LOW);
   digitalWrite(4, HIGH);
   digitalWrite(3, LOW);
   digitalWrite(2, LOW);
}
else if(hic>= 32 && hic < 41){
   digitalWrite(5, LOW);
   digitalWrite(4, LOW);
   digitalWrite(3, HIGH);
   digitalWrite(2, LOW);
}
else if(hic > 41){
   digitalWrite(5, HIGH);
   digitalWrite(4, HIGH);
   digitalWrite(3, HIGH);
   digitalWrite(2, HIGH);
}



  Serial.print(F("Humidity: "));
  Serial.print(h);
  Serial.print(F("%  Temperature: "));
  Serial.print(t);
  Serial.print(F("°C "));
  Serial.print(f);
  Serial.print(F("°F  Heat index: "));
  Serial.print(hic);
  Serial.print(F("°C "));
  Serial.print(hif);
  Serial.println(F("°F"));
}