[sdiy] Fatman module??

[Tim Ressel]

Motohiko,

Yes, this is what I had in mind. A self-contained
module for when you just want a synth voice, and don't
really need lots of versatility.

I like the idea of doing little sub-modules. I am
concidering the idea of making a little expo
convertor. It would be a duplicate of the expo
convertor I use on my VCOs, and use surface mount
components to make it really small. This would reduce
the circuitry needed for a full VCO by a factor of
two. Other modules might include a state-variable
filter and a multi-VCA. 

--Tim


--- Motohiko Takeda <takeda at aleph.co.jp> wrote:
> 
> Hi all and Tim!
> 
> That's so impressive idea.
> I'm making plans almost same things. Mine is like
> this...
> 
> I build a voice board. That has VCO,¡¡VCF and VCA.
> And there is
> small connector or something and it go to controller
> board. 
> 
> The controller board is mounted on the panels that
> has pots
> ,knob and switches. this board has EG and LFO.
> The connector have 1CV, 3 address line and board
> enable line
> or so. You can send 8 CVs to the voice board. And
> you can select 
> the voice board by board enable line.
> 
> If you build both board then it works as mono synth.
> 
> And if you get the CEM chips then you can build
> voice board
> easily. Don't mind If you can't get them, you can
> build it 
> by discreet components too.
> 
> At first, you may build controller board as analogs.
> If you 
> familiar with PIC or AVR, then you can build them as
> as 
> microprocessor base. You you may mount MIDI-CV on
> it.
> 
> This Project's core is sepalating voice core and
> modulation core.
> In my small experience said that the most hard part
> of self 
> building synth is making panels. My first panels are
> almost 
> finish. but there is so many circuit that I want to
> try out.
> But if I build them, I should make another panels
> again, and 
> it makes so down. So I want panels that can use
> generally. 
> If I chenge the voice board then I can play deferent
> 
> configurations so easily. and it may be a poly synth
> if you 
> add some more voice board to it.
> 
> Yes, I don't know what kind of voice board will
> come, but if
> this voice board has a special connecter that I want
> to propose
> then you can plug it to the panel and you can drive
> them easily. 
> There should be so many kind of variation of voice
> board. And 
> there also is controller panels. It should be big or
> fancy, so 
> many kind of...
> 
> the voice board should be FatMan or BaseAce style
> and easy to 
> build is most important thing I think.
> 
> I think that it's amazing for me. How about this?
> 
> Cheers,
> Motohiko Takeda
> Tokyo Japan.


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