Hexapod ported the open source USB stack to his ORbit16 USB development board. The board supports both PIC32 and PIC24 microcontrollers. All the pins are broken out to two female headers, with each pin having 2 connections.
In this example we’ll use the Open Source USB CDC Stack from Dangerous Prototypes. ORbit16™ will be recognized as a new virtual COM port (COMx). Open a terminal program (such as HyperTerminal, Teraterm and so on), connect to the virtual COM port, type something on the keyboard, chars will be echoed back. By pressing ‘a’ (lower A), led DL2 on board will turn on, by pressing ‘b’ (lower B), led will turn off.