#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,20,4); //object lcd
#include <DHT.h>                
#define DHTPIN 4     
#define DHTTYPE DHT22// DHT 22  (AM2302), AM2321,DHT21,DHT11
DHT dht(DHTPIN, DHTTYPE);// Object to dht
void setup() {                                                                                                           
  //lcd.begin(16, 2);
  Serial.begin(9600);
  dht.begin(); 
    lcd.init();                      // initialize the lcd 
  lcd.init();
  lcd.backlight();
}

void loop() {
  float h = dht.readHumidity();
  float t = dht.readTemperature();
  Serial.print("Temperature= ");
  Serial.print(t);
  Serial.println("°C ");
  Serial.print("Humidity= ");
  Serial.print(h);
  Serial.println("% ");

  

  lcd.clear();
  lcd.setCursor(0, 0);//(column, row)
  lcd.print("Temp = ");
  lcd.print(t);
  lcd.print(char(223));
  lcd.print("C");
  lcd.setCursor(0, 1);//(column, row)
  lcd.print("Humidity=");
  lcd.print(h);
  lcd.print("%");
 lcd.setCursor(0, 2);//(column, row)
  lcd.print("Physics Dept.");
 lcd.setCursor(0, 3);//(column, row)
 lcd.print("PinglongUniversity");
  delay(1000);
}