#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd (0x27,16,2);
void setup() {
  lcd.init();
  lcd.backlight();
  lcd.setCursor(1,0);
  lcd.print("Hello,world !");
  lcd.setCursor(2,1);
  lcd.print("Arduino UNO");
}
void loop(){
  delay(100);
}