Well, currently the methods I've been looking at are:
-MIDI pickups (Roland mainly)
-Square wave synth pedals (I'm a bit lost and miffed here since I have no idea what is good)
MIDI pickups are obviously the more expensive option since then I'll need a GR-20 or something to put the MIDI singal through and process it.
Since this is really a sort of concept stage I'd rather go with a cheap option incase it doesn't work out so I'm looking at synth pedals, any advice?