[sdiy] New Aquisition

[patchell]

    I would probably just do three independent gates.  I would never be able
to remember what pattern to push the buttons in to get the gate output I
wanted.

John L Marshall wrote:

> Would you rather have three independent gates or demux to one of eight
> gates?
>
> John
> ----- Original Message -----
> From: Jim Patchell <patchell at silcom.com>
> To: <synth-diy at dropmix.xs4all.nl>
> Sent: Wednesday, October 17, 2001 7:08 AM
> Subject: [sdiy] New Aquisition
>
> >     We are cleaning out the attic here at work.  I found a track ball.
> > It is pretty nice, about 1 1/2" diameter ball and three buttons...two
> > problems...first, to reverse engineer the thing to find out how it
> > interfaces (this is only a minor problem)...the second problem...anybody
> > got any idea's on how I should use this thing with a synth?
> >
> >     My idea was just to make a module that would have two control
> > voltages out (for X-Y) and three outputs for "gates" that are activated
> > by the three buttons.  This is pretty straight forward.  If anybody else
> > have a more inspired idea?  I am open to more idea's.
> >
> >     By the way, this is a Cognex Trackball, dating from around 1995.  If
> > anybody has the documentation for this thing, it would make my reverse
> > engineering much easier.  When I transfered all the documentation for
> > our cognex system to another employee, who then quit a couple of years
> > latter and took it all with him, has sort of left me stranded.
> >
> >     -Jim
> >
> >

--
 -Jim
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