#include <wire.h>
#include <liquidcrystal_i2c_gy.h>

LiquidCrystal_I2C_GY lcd(0x20,20,4);  // set the LCD address to 0x20 or 0x38 for a 20 chars and 4 line display

void setup()
{
  lcd.init();                      // initialize the lcd

  // Print a message to the LCD.
  lcd.backlight();
  lcd.print("Hello, world!");
}

void loop()
{
}