I used them in the first Drumroll, and it was an idea I borrowed from Gary. The 25A fuses will blow before the controllers will, but if you were to use 15A fuses, they might be more likely to blow on a semi-regular basis and you'd get fed up of replacing them.

They're in Carcinus now, but without the fuses. One of the controllers needs fixed though, so might need to put them back in.