#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 setup() {
  // Init
  lcd.init();
  lcd.backlight();

  // Print something
  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");
  lcd.setCursor(2, 3);
  lcd.print("Power By Ec-yuan!");
}


void loop() {
}