I have no particular expertise in embedded hardware and am at best a proficient Linux user. But there's just something about a complete computing system that can fit in your hand without any restrictions to the hardware that just makes me smile.
I saw an opportunity to contribute something that I learned so I did. I enjoyed it, so I'll try to do more.
If you have any questions you can contact me at the email address of clubbby (yes, 3 b's) belonging to the .com domain of gmail.