His original post: http://dmitry.gr/?r=05.Projects&proj=33.%20LinuxCard
His license:
The license on my code is simple: free for all non-commercial use, including using as your own business card. For commercial use (like if you wish to sell kits of this project), contact me.
This repo is served as an backup of the code, in case something goes wrong.
Again, many thanks to Dmitry Grinberg for this awesome project.