#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include "DHT.h"
#define DHTPIN 4  
#define DHTTYPE DHT22  
DHT dht(DHTPIN, DHTTYPE);    
LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);
void setup() {
  Serial.begin(115200);
  LCD.init();
  LCD.backlight();
  //Serial.println("KEC");
  Serial.println(F("DHTxx test!"));
  dht.begin();
}
void loop() {
  delay(2000);
   LCD.clear();

  // Reading temperature or humidity takes about 250 milliseconds!
  // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  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(F("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(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"));
  LCD.setCursor(5, 0);
  LCD.println("DHT");
  LCD.setCursor(1, 1);
  LCD.print("h ");
  LCD.print(h);
  //LCD.setCursor(4, 1);
   LCD.print(" t ");
  LCD.print(t);
  delay(5000);
 }