It's a small and inexpensive board that is normally used to deploy designs developed with Wiring. It's useful when you want to make multiple objects and don't want to give away your precious Wiring board
The circuit was designed by Massimo Banzi [ http://www.potemkin.org/ ] and David Cuartielles [ http://www.0j0.org/wiki/index.php/DojoDave ], it is opensource and you can download the Eagle cad files here.
The software has been mainly written by David Mellis [ http://dam.mellis.org/ ] and Nicholas Zambetti [ http://www.zambetti.com/ ], based on Wiring by Hernando Barragan.
Yaniv Steiner and Giorgio Olivero have been supporting the project and are working at using it with the Instant Soup [ http://instantsoup.interaction-ivrea.it/ ] platform.
There are three versions of the Arduino board:
And here's the software:
Arduino software [ https://developer.berlios.de/project/showfiles.php?group_id=3590 ]
Bugs [ http://arduino.berlios.de/index.php/Main/Bugs ]
Copyright 2005 http://arduino.berlios.de/