how to connect lcd 1602 IIC to your arduino
http://www.lab-z.com/arduino-%E4%BD%BF%E7%94%A8i2c%E7%9A%841602-lcd/
example:
//YWROBOT
include <Wire.h>
include "LiquidCrystal_I2C.h"
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
// Print a message to the LCD.
lcd.backlight();
lcd.print("Hello, world!");
lcd.setCursor(1,1);
lcd.print("www.lab-z.com");
}
void loop()
{
}
