[sdiy] PAIA Midi2CV - Replacing DIP Switch with Rotary Switches

[Peter Swarbrick]

Hello all
i have done exactly this mod on three PAIA Midi2CV boards to date. Since the
channel select DIP switches are already weighted in BCD  (ie 1/2/4/8 ) using
a BCD coded rotary switch you can simply connect the matching outputs to the
corresponding switch pads and the common to the DIP common (Ov IIRC).The
mode switch can be wired in a similar way. I know Farnell and RS components
do these switches here in the UK, I'm sure others do too. I am guessing
Digi-key or Mouser also stock them in the US. They are quite pricey but I am
fortuanate enough to have picked up a large bag of around 40 pieces at a
surplus sale a few years back - I doubt I'll ever get through them all! BTW
I am a big fan of this midi-CV board : it's great value and very flexible.
Hope this helps
Pete
----- Original Message -----
From: "Henry Till" <htill at yahoo.com>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Wednesday, September 15, 2004 7:02 PM
Subject: [sdiy] PAIA Midi2CV - Replacing DIP Switch with Rotary Switches


> Hello,
>
> I was perusing Grant Richter's modules at:
> http://www.musicsynthesizer.com/Modules/modules.htm
>
> And I noticed that he had modified his PAIA Midi to CV Converter with
> Two Rotary Switches and Binary Encoders to replace the DIP switch in
> the unit.  I though this was a good mod, as I never really liked the
> DIP switch in my midi2cv8.
>
> Could somebody point me in the right direction as to where I can get
> some information on how to do a mod like this myself.  I assume I need
> some 40xx chips, but I don't know which or how to wire them up, and am
> wondering if this kind of mod is documented somewhere.
>
> Any help would be most appreciated...
>
> Thanks,
> -H
>
>
>


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