//YWROBOT
//Compatible with the Arduino IDE 1.0
//Library version:1.1
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 16 chars and 2 line display

void setup()
{
  lcd.init();                      // initialize the lcd
  // Print a message to the LCD.
  lcd.backlight();
  lcd.setCursor(3,0);
  lcd.print("Hello, world!");
  lcd.setCursor(2,1);
  lcd.print("Ywrobot Arduino!");
   lcd.setCursor(0,2);
  lcd.print("Arduino LCM IIC 2004");
}

void loop()
{
     lcd.setCursor(2,3);
  lcd.print("Power By Ec-yuan!");
  
    mydelay(500);
      lcd.setCursor(2,3);
  lcd.print("                 ");
    mydelay(500);
}

void mydelay(int thedelay)
{
     unsigned long time_now = millis();
     while(millis() < time_now +  thedelay){
        //wait approx. [period] ms
    }
}