Display iic/12c lcd1602 fondo azul con driver

Especificaciones

I602 está equipado con 4 pines en total. SCL se debe conectar a analógico 5, SDA a analógico 4, VCC a + 5V y GND a tierra
Sample code:
//YWROBOT
//Compatible with the IDE 1.0
//Library version:1.1
#include
#include
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
lcd.init();
// Print a message to the LCD.
lcd.backlight();
lcd.setCursor(3,0);
lcd.print("Hello, world!");
lcd.setCursor(2,1);
lcd.print("Ywrobot !");
lcd.setCursor(0,2);
lcd.print("LCM IIC 2004");
lcd.setCursor(2,3);
lcd.print("Power By Ec-yuan!");
}
void loop()
{}