Korg Poly800/EX800 Users

Hope this link works..

http://www.mouser.com/Search/Refine.aspx?FS=TRUE&N=4294759693+5502072+4292822897+1323043

if 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.pdf

that 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-5

Apparently 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
> >
>