Módulo display LCD 16×2 I2C (Ligação Easy) para Arduino Keyestudio

//YWROBOT
//Compatible with the Arduino IDE 1.0
//Library version:1.1
#include <Wire.h>    // Place file “Wire.h” under the directory “library” of Arduino
#include <LiquidCrystal_I2C.h>  // Place file “LiquidCrystal_I2C.h” under the directory “library” of Arduino
LiquidCrystal_I2C lcd(0x27,16,2);  // set the LCD address to 0x27 for a 16 chars and 2 line display
void setup()
{
  lcd.init();                      // initialize the lcd 
  lcd.init();
  // Print a message to the LCD.
  lcd.backlight();
  lcd.setCursor(2,0);
  lcd.print("Hello, world!");
  lcd.setCursor(2,1);
  lcd.print("Hello, keyes!");
}
void loop()
{
}