Disclaimer!: Ed Baafi, a student at the MIT Media Lab, designed the Fabduino, a Fabable, Arduino compatible board. For more information and some directions, visit this site: http://fab.cba.mit.edu/content/projects/fabkit/
I went through the process many times, failing multiple times for different reasons, and decided to put together a guide of some tips and tricks for putting one together! They are listed on my site:
Unfortunately, I've already invested a lot of time into publishing it on my own site, but I thought I would share in case others would like to learn.
Step 1: Head to This Page...
image courtesy of Ed Baafi!