The smaller video pics of the other (feeder) side don't really show how much of a monstrosity that thing is.
Not that that's a bad thing, it just didn't look that... complicated in the first vid.
Looks to me like it's six Ions and a geared feeder. What's that box on the top with the 9-volt? I thought it was some kind of red-dot, but it doesn't look right- and if it were, why the external battery?