See this forum for the full project blog:

http://www.electric-skateboard.builders/t/diy-6s-to-12s-bms-with-can/2639

Some Youtube videos:
Demonstrating charging and power on:
Firmware updating (when I just got it to work ):

See my Github for the sources!

Demonstrating the recently added firmware update functionality:


Small demo of power switching and charger switching:

Testing the main output switching stage (some very initial testing):

I hope to make a full demo video in the near future ^^.