#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  lcd.init();
  lcd.backlight();
}

void loop() {
  lcd.clear();
  lcd.setCursor(2, 0);
  lcd.print("Hello, World!"); 
  delay(2000);       
  lcd.clear();
  lcd.setCursor(2, 0);
  lcd.print("LCD I2C"); 
  delay(2000);                               
}