#include <LiquidCrystal_I2C.h> 
 
// set the LCD number of columns and rows 
int lcdColumns = 16; 
int lcdRows = 2; 
 
// set LCD address, number of columns and rows 
// if you don't know your display address, run an I2C scanner sketch 
LiquidCrystal_I2C lcd(0x27, lcdColumns, lcdRows);   
 
void setup(){ 
  // initialize LCD 
  lcd.init(); 
  // turn on LCD backlight                       
  lcd.backlight(); 
} 
 
void loop(){ 
  // set cursor to first column, first row 
  lcd.setCursor(0, 0); 
  // print message 
  lcd.print("Naihuoy"); 
  delay(1000); 
  // clears the display to print new message 
  lcd.clear(); 
  // set cursor to first column, second row 
  lcd.setCursor(0,1); 
  lcd.print("IOT is Fun :)"); 
  delay(1000); 
  lcd.clear();  
}