#include <LiquidCrystal_I2C.h>

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

LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 20, 4);

void LCD_print() {
    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() {
    LCD.init();
    //LCD.backlight();
}

void loop() {
    LCD_print();
    delay(3000);
    LCD.clear();
    delay(1000);
}