//libraries
#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
#include <DHT.h>; 

// set the LCD address to 0x27 for a 16 chars and 2 line display
LiquidCrystal_I2C lcd(0x27,20,4);  

//define Variables
#define DHTPIN 7     // what pin we're connected to
#define DHTTYPE DHT22   // DHT 22  (AM2302)
DHT dht(DHTPIN, DHTTYPE); // Initialize DHT sensor for normal 16mhz Arduino

//define Variables
int chk;
float hum;  //used to stores humidity value
float temp; //used to stores temperature value

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


void loop()
{
  delay(2000);
  //Read data and store it to variables hum and temp
  hum = dht.readHumidity();
  temp= dht.readTemperature();
  //Print temp and humidity values to serial monitor
  lcd.init();                      // initialize the lcd 
  lcd.init();

  // Print messages of temperature and humidity value to the LCD.
  lcd.backlight();
  
  lcd.setCursor(0,0);
  lcd.print("Temp: ");
  lcd.setCursor(0,1);
  lcd.print("Hum:");
  lcd.setCursor(6,0);
  lcd.print(temp);
  lcd.setCursor(7,1);
  lcd.print(hum);
  lcd.setCursor(10,1);
  lcd.print("%");

  //estimarte the temperature 
  if(temp>30.0){
    lcd.setCursor(12,0);
    lcd.print("hot");
  }else if(temp<15.0){
    lcd.setCursor(12,0);
    lcd.print("cold");
  }else{
    lcd.setCursor(12,0);
    lcd.print("well");
  }

  // estimate the humidity
  if(hum>70.0){
    lcd.setCursor(12,1);
    lcd.print("damp");
  }else if(temp<30.0){
    lcd.setCursor(12,1);
    lcd.print("dry");
  }else{
    lcd.setCursor(12,1);
    lcd.print("well");
  }
}