Regarding the selection of the encoders:
Keep in mind that you buy the correct version. You have the two values pulses per revolution (ppr) and detents per revolution.
Some chips or decoding circuits need a full pulse per detent others only need a half pulse in the quadrature timing.
For the user feeling the detents (mechanical clicks) are interesting, the pulses are only important for the electronics behind the encoder.
If you buy the wrong encoder you get one pulse every two steps or 2 pulses per step and not one pulse per step as needed.
Ciao
Peter
-----Ursprüngliche Nachricht-----
Von:
korgpolyex@yahoogroups.com [mailto:
korgpolyex@yahoogroups.com] Im Auftrag von bimmerfan222
Gesendet: Mittwoch, 11. April 2012 05:16
An:
korgpolyex@yahoogroups.comBetreff: [korgpolyex] Encoders at Mouser
Hope this link works..
http://www.mouser.com/Search/Refine.aspx?FS=TRUE&N=4294759693+5502072+4292822897+1323043if that don't work, try searching "PEC09" on Mouser and it should pull up a list of encoders.
heres a link to a pdf
http://www.bourns.com/data/global/pdfs/PEC09.pdfthat is the general description.. then its a matter of narrowing down how many dentents you want, I'd think a dial that you can feel notches in while turning would be best.
These encoders are quite common by many mfr's and very similar. I picked Mouser because they are a common supplier of parts.
The bourns dials seem to be either 30PPR (pulses per revolution) or 12ppr, but vary from 30, 24 and 12 detents. The 30 detent and 0 detent (smooth, I assume) are the only ones with 30ppr. the other two detent versions are 12ppr.
here are more encoders by bourns on Mouser
http://www.mouser.com/bournsproaudio/#tabs-5Apparently they have encoders with LED's that light up the shaft.. which could be a really cool way to indicate what mode the dial is in.
hth and lmk what you think
-Blaine
--- In korgpolyex@yahoogroups.com, Michael Hawkins <korgpolyex800@...> wrote:
>
> Keep in mind that the HAWK mod has a joystick parameter control option that lets you use the X and Y axis to select parameters and set their values.
>
> But, I would be interested in assisting with putting an encode or two or more into operation.
>
> Can you point me at the mechanical encoder you might be considering using?
>
> Mike
>
>
>
> ________________________________
> From: bimmerfan222 <bperkins211@...>
> To: korgpolyex@yahoogroups.com
> Sent: Monday, April 9, 2012 10:26 PM
> Subject: [korgpolyex] Re: rotary data dial +/-
>
>
> Â
>
> Hi Gordon, thanks for the reply.
>
> Surely there is a way to slip in a rotary encoder to mimic a up\down value keys..
>
> I was thinking of using this decoder by elmelectronics.com
>
> http://elmelectronics.com/DSheets/ELM402DS.pdf
>
> couldnt the outputs be placed in parallel with the value switches?
>
> It can be set to generate 2.0msec pulses on two channels
>
> --- In korgpolyex@yahoogroups.com, Gordon JC Pearc e <gordon@> wrote:
> >
> > On 08/04/12 16:09, bimmerfan222 wrote:
> >
> > > I've yet to see an 800 with this simple, yet very helpful mod and am a little dumbfounded that it has not yet been done.
> > > Debouncing is key to getting a smooth signal out to the triggers, otherwise you'd end up getting wild jumps in up/down values when moving the knob slow or fast.
> >
> > No, you won't.
> >
> > You'll get a rotary encoder that has to be turned painfully slowly
> > to avoid it missing steps. The buttons are already debounced, and
> > have quite a long debounce time.
> >
> > --
> > Gordonjcp MM0YEQ
> >
>
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