[sdiy] DOTCOM Analog Sequencer.. next project startup..

[Ben Bradley]

Each knob could go to a pulley about one inch diameter, and have a
dial string loop around each pulley and at the end loop around (with
idler pulleys) back the first one so they all turn together. Use metal
knobs and shafts and a slip ring connection to each knob or shaft that
connects to a touch sensor. This sensor would work for 12 knobs:
https://www.adafruit.com/product/1982

It would be a bit of a kludge, but it would be cheap.

On Sat, Jul 25, 2020 at 6:55 AM Ingo Debus <igg.debus at gmail.com> wrote:
>
>
> > Am 25.07.2020 um 09:20 schrieb rsdio at audiobanshee.com:
> >
> >>
> >> I once had the idea that for an user interface like this, you could use *one* rotary encoder that is driven by many thumbwheel-style knobs, all one the same shaft. When one of the thumbwheels is touched, the corresponding parameter is selected. How about that? Of course you can only change one parameter at a time, so this is no good for mixing consoles or the like.  But for a sequencer this might work.
> >
> > That's a neat idea, but unless someone has already manufactured the complicated mechanical structure that would allow 16 thumbwheel to turn the same encoder (without turning the other thumbwheels), then it sounds like a very expensive contraption to design and put together.
>
> Well, I thought all thumbwheels would be turning simultaneously. Would that be a problem? You turn one and the others follow.
>
> The tricky part is detecting which one is touched.
>
> Ingo
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at synth-diy.org
> http://synth-diy.org/mailman/listinfo/synth-diy