The Monome (http://monome.org http://monome.org ) would be a good example of open source hardware. They have opened up their schematics and firmware so that yo

The Monome (http://monome.org http://monome.org ) would be a good example of open source hardware. They have opened up their schematics and firmware so that you can build your own, and it has lead to people porting it to other platforms (like arduino)