[sdiy] Korg Poly61 a peculiar design!!

[m.bareille at free.fr]

Hi Peter,

Thank you for links about MIDI interfaces . Bojan's one look good but ,well
forget me about the PIC16F84 and MIDI.

In fact i hesitate between two idea for this synth:
1) emulate the keyboard by MIDI only and keep the synth as this without keyboard
( rack it may be?)

2) as  suggested into  previous emails of this thread,  'redesign' the CPU board
to integrate MIDI , improve parameters range, add control pots for each
paparemeters , add more functions if it is possible to do,. To resume : try to
'drastically' improve the thing ! It will be much more work but i have the
feeling that it  probably worth to do it like this.

Well it is 50/50 for now ! I must take the time to study the Poly61 schematics
more deeper to take a decision.

Anyway thank you very much for your helps and suggestions :)

Thanks,

Marc B.






Selon Ullrich Peter <Peter.Ullrich at kapsch.net>:

> Hi Marc!
>
> >I have a Poly61 too but with a dead keyboard. The keyboard is the true weak
> >point of this synth, and there is no MIDI(sic)
>
> Bob Weigel [ mailto://sounddoctorin@imt.net ] sells 3M conductive
> selfadhesive stickers
> that can be put on the graphite stamps on the rubber part of the keyboard.
> Read more about it here:
> http://sounddoctorin.com/synthtec/parts/key.htm#polycontacts
> There is also a PDF and video there that shows how to install.
>
> >I had +/- in mind to design a special MIDI interface for it to emulate the
> >keyboard.
>
> I already did this -  works fine but is a quite expensive design as I made a
> universal design where
> Analog Matrix chips with diode decoupling sits in parallel with the keyboard.
> A Universal design always has its price...
> There is no information about that on my webpage but if you are interested I
> could send you information and pictures on it per private email.
>
> But Bojan Burkeljc Polysix MIDI-Interface could work here too and has a very
> cheap hardware!
> You can select Bojan PCB or my PCB- design - I added a midi address switch
> (P6retro2; and Bojan added the software to read the switch) while Bojans
> Version (P6retro) only has the MIDI settable address selection.
> http://www.angelfire.com/geek/srlabs/
>
> Ciao
> Peter
>
> http://www.ullrich.at.tf
> http://go.to/datdial (Synth addon)
>
>
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