/* How to use the DHT-22 sensor with Arduino uno
   Temperature and humidity sensor
*/

//Libraries
#include <DHT.h>;
#include <LiquidCrystal_I2C.h>

//Constants
#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
LiquidCrystal_I2C lcd(0x27 , 16, 2);

//Variables
int chk;
float hum;  //Stores humidity value
float temp; //Stores temperature value

void setup()
{
  Serial.begin(9600);
  lcd.begin(16,2);
  lcd.init();
  lcd.backlight();
  dht.begin();

  lcd.setCursor(4,0);
  lcd.print("Welcome");
  delay(3000);
  lcd.clear();
}

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.setCursor(0,0);
    lcd.print("Humi: ");
    lcd.print(hum);
    lcd.setCursor(11,0);
    lcd.print(" % ");
    lcd.setCursor(0,1);
    lcd.print("Temp: ");
    lcd.print(temp);
    lcd.println(" Celsius");
    //delay(2000); //Delay 2 sec.
}