I was wondering about converting the remote control system (was a kit I built) I have already as the control unit could power something more than the Alps blue pot perhaps? I don't need to use that any more having gone TVC. See http://dantimax.dk/
Not sure it could handle the power needed to drag my stepped switch around though.
Sorry- beyond my level of technical competence! However, if you could find what drives the kit manufactureres are using (eg DIY HiFi Supply- http://www.diyhifisupply.com/) it might give you a clue. I'm sure someone here will be able to advise you. Good luck