#include <LiquidCrystal_I2C.h>

#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

void lcdprint(){
  // Print something
  lcd.setCursor(8, 0);
  lcd.print("CityU");
  lcd.setCursor(7, 1);
  lcd.print("EE 5437");
  lcd.setCursor(8, 2);
  lcd.print("Lab02");
  lcd.setCursor(8, 3);
  lcd.print("Enjoy!");
}
void setup() {
  // Init
  lcd.init();
  lcd.backlight();

}


void loop() {
  lcdprint();
  delay(3000);
  lcd.clear();
  delay(1000);
}