Using the BV4221
The
BV4221 us a USB to I2C convertor and I2C bus analyser. The main purpose is to be
able to control I2C devices using a PC with a USB.
This article will give an idea of how this device is used, for a full and detailed specification then see the datasheet section of this site.
Introduction to the BV4221
This video created by Free Video to Flash Converter
The following video will demonstrate how to turn on the back light and send some text to the connected LCD display. Click on the play icon at the bottom of this picture.
Here is the result:

