Piduino prototype, an Arduino clone I/O expansion board for the newly released Raspberrypi.
The Piduino can supply power to RaspberryPi and also standard Arduino Shield compatability and prototyping area for custom electronics. The piduino allows the developer to create , test and deploy their applications on the same piece of hardware. Final releases should be available once we have fully debuged any potential issues between it and the Raspberrypi.
Is this the first I/O expansion board for the Raspberry Pi?
http://shropshirelug.wordpress.com/2011/12/10/mopi-a-prototype-board-for-raspberrypi/#comments