The Engineer Tutor PIC24FJ Library – USB CDC Device

This is probably the most powerful peripheral on the GB002 device.  It is a USB peripheral that allows a PC to hook up to the chip.  Once the chip is hooked up it looks like a serial port to the PC.  This allows you to communicate with the chip using many different programs including VB and other Windows based products.  It is even very easy to communicate with the device using Linux.