MUIO - Steve Symons
Symons 'open sourced' his muio device as part of his 'gyoml' residency.
a linux software interface for
a modular USB system for "sensing and controlling the Real
World". The muio can be interfaced with Pure Data, MAX/MSP,
SuperCollider, Processing (and others) and can be hand-made.
Muio interface device
about the Muio device can be found at: http://muio.org/interface.php
Build your own mini muio - http://muio.org/interface.php?section=about&page=build
Linux & Mac OS X drivers to interface the device - http://muio.org/interface.php?section=download