This project is quite old now. And at least for me it is some kind of finished now. I do have have enough board for myself. At least if I do not give away to much boards boards in the future. And they are working fine. I did made some small changes after the last revision (rev2.2). I think the biggest issue was a wrong pin-mapping on the UART header. I decided now to publish the (maybe final) version including eagle files under CC BY-NC-SA. So you can now, if needed, make adjustments yourself. Please post some pictures if you do so.

Here are some renderings of the rev2.3 boards:

I will not order this revision for myself now. So if you use the files please consider that they are "untested". You can find the files in the bitbucket repository.