Very nice USB site. USB Bit Whacker

[tripp]

http://greta.dhs.org/UBW/index.html

Firmware Versions (Source code and project files - browsable):

Firmware C v1.0 (Simple parallel port replacement (write byte to 8 bit parallel port, read 6 inputs) via virtual COM port)
Firmware D v1.1.0 (Ships on Spark Fun's UBW boards - complex commands via virtual COM port)
Firmware D v1.2.0 (Adds analog commands, pin commands and memory read/write to FW D v1.1)
Firmware D v1.3.0 (Fixes a bad bug in FW D v1.3)
Firmware D v1.4.2 (Adds RC servo outputs and fast latching parallel outputs, among other things)
Custom Stepper Controller firmware project files (This will be Firmware S) (not available yet)

/Tripp