PS2USB
This project converts two Playstation 1 or Playstation 2 converter into usb josysticks. It also features the Dance Pad Code (Up+START+SELECT), so that it can be used in DDR games (tested with Stepmania). Works under Linux, Mac OSX, Windows.This project uses a Firmware-Only USB Driver for the AVR
   PS2USB
at avrusb.wikidot.com