thinking out loud: i wonder if it would be possible to make a controller board that could use either a DC or AC power stage, kind of like a universal motor logic board. Being in software myself i'd love to see a reusable module
that just plugs into a high power section.
but would allow for higher runs on the controller section, as the design would be the same.
probably not possible, i'll put it down to to one of Haydon's(me) hair brain schemes.
edit: after looking a bit more at how Paul's going to do this i think its not possible. i'll shut up now and return to lurking :P