I've been watching your videos leading up to this one. It's very impressive, particularly the effort you've gone to to get proper synchronization. I would ask, though, that you do your test runs somewhere that doesn't trigger my phobia of models plunging off the edge of tables quite so much!
With it getting harder to run indoor live steam at shows several of these would be really captivating. Will the batteries outlast the water? And what happens if you were to stop on a quarter - with the magnet by the reed switch?