[sdiy] Coarse and fine on one pot

[KA4HJH]

On Nov 12, 2014, at 8:05 AM, Rob Spencer <Rob at gmsn.co.uk> wrote:

> Hi,
> 
> Does anyone know of a pot which has the ability to control coarse and fine values in one unit.
> 
> So there would be one knob, with maybe an outer for coarse and inner control for fine. I'm sure I've seen then on electronics from yesteryear but can't seem to fine then anywhere.
> 
> Hopefully I haven't just made them up. Any help would be much appreciated.


Not mentioned so far is the planetary drive used by the Oberheim SEM. Same functionality as a vernier pot drive but with two knobs. One turns very slowly the other is 1:1. 

I have no idea where you'd find one these days.


Terry Bowman, KA4HJH
"The Mac Doctor"