Brandon Heller shows his experience in printing with Kossel powered by BeagleBone Black, BeBoPr cape and MachineKit. Reliability is 100% now with some minor functionality missing.
Source:
https://www.youtube.com/user/bdh4?feature=watch
http://elinux.org/Beagleboard:BeBoPr_Cape
Source:
https://www.youtube.com/user/bdh4?feature=watch
http://elinux.org/Beagleboard:BeBoPr_Cape