chipKIT Pro MX4
I work for Digilent (one of the makers of the chipKIT boards) and we're doing several project series involving our parts. More microcontrollers and FPGAs coming soon. Fritzing has been a valuable resource for us! Digilent chipKIT hardware files are licensed under the Creative Commons-Attribution-ShareAlike license. This license allows for both personal and commercial derivative works, as long as proper credit is given to Digilent and the designs are released under the same license.
This was created in Adobe Illustrator and Fritzing and can also be found in the user-created parts repository.