Haha, I rambled-on a bit yesterday, no sleep and lots of coffee
Hi
AndrewJ, I think the original idea for this particular controller was to have incremental control, kinda like a stepper without a stepper
, will continue with that theme. Cheers tho.
A two button unit would be one handed too I think, I imagine using a small handheld box with just two buttons, rest the thumb between the two buttons(or even a single self-centring SPDT toggle switch) and just push up or down. Certainly easier to use than a single button with a switch to change direction - no disrespect to Dennis' original tho - I just imagine I would keep forgeting to flick the direction changer and go the wrong way.
Roger, if you're liking the two button/no switch idea, forget the H-bridge in my previous post, too much mucking around, too many components.($$)
I've found the perfect solution tho; a cheap, available, single-chip H-bridge with only one external component needed. Even simpler than the original motor driver!! Will post a schematic later today.
Wish I had a 'scope with a real focuser(has a helical), would make one of these for myself.