I2C Module For 1602 LCD

You can solder the pins directly to your 1602 LCD or use it with a breadboard. It include a adjustment pot to control the back-light brightness,

I2C Module For 1602 LCD Specification

• Compatible with 16x2 and 20x4 display's
• Default I2C Address = 0x3F
• Address is selectable - Range 0x20 to 0x27

Arduino Code 

#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
// Set the LCD address to 0x3F for a 16 chars and 2 line display
LiquidCrystal_I2C lcd(0x3F, 16, 2);

void setup()
{
// initialize the display
lcd.begin();
// Turn on the blacklight and print a message.
lcd.backlight();
lcd.print("Hello, world!");
}

void loop()
{
// Do nothing here...
}