Many moons ago I would stumble accross a link in the open builds site (whether it was forums, store, or doc I dont remember) that showed the schematics for the muscle board and brain board of the black box. been on the hunt for those files and cannot find them. If you can send a link or direct me were to find them that would be incredibly helpful
Not sure if they have been updated but they are in the file section of the Blackbox build thread: BlackBox Motion Control System