MOTM

> Never mind my last post. The output would only swing from +10 to 0 volts,
> and bipolar would probably be more useful. See the attached image for a
> quick and easy schematic. The opamp type is not critical.

The Joystick module I've built some years ago for my JH-3 system
has the following features:

CV Output jacks for X and Y, bipolar +/-5V each.
Two bicolor LEDs for X and Y.

Four VCAs with inputs/outputs connected in "diamond shape"
with a variety of functions:

(1) Mixing of 4 inputs into one output with 2 modes (see below):
   2-dimensional crossfading.
   When only to of the 4 inputs are connected, the other ones are
   automatically normalized to the negative (inverted) input signal
   of the adjacent inputs. (Acting as a 2-dimensional reversible
   attenuator)

(2) Distributing one input to 4 outputs (2-dimensional or "quad"
    panning)
    Use this as "Azimuth coordinator" for a real Quad system, or
    connect two of the outputs to the effect send of a true stereo
    reverb in an ordinary stereo system.

(3) "Mode" switch, applies to both (1) and (2):
    a) normal panning / crossfade: When joystick is in center,
       result is a mix of 50% X and 50% Y.
    b)  center zero: When joystick is in center, there is no output
       signal at all. This means independent selection of 4 different
       sources, for instance.

I don't remember circuit details, but I think I found a way to do it all
with just a SSM2024 and 2p2t switches - kind of matrix connection.

JH.

Jurgen,

did you mount your joystick on a vertical panel in the main cabonet, or in
an auxillary box?

Dave Bradley
Principal Software Engineer
Engineering Animation, Inc.
daveb@...

> -----Original Message-----
> From: jhaible [mailto:jhaible@...]
> Sent: Wednesday, April 12, 2000 6:00 PM
> To: motm@egroups.com
> Subject: [motm] Joystick
>
>
>
> > Never mind my last post. The output would only swing from +10
> to 0 volts,
> > and bipolar would probably be more useful. See the attached image for a
> > quick and easy schematic. The opamp type is not critical.
>
> The Joystick module I've built some years ago for my JH-3 system
> has the following features:
>
> CV Output jacks for X and Y, bipolar +/-5V each.
> Two bicolor LEDs for X and Y.
>
> Four VCAs with inputs/outputs connected in "diamond shape"
> with a variety of functions:
>
> (1) Mixing of 4 inputs into one output with 2 modes (see below):
>    2-dimensional crossfading.
>    When only to of the 4 inputs are connected, the other ones are
>    automatically normalized to the negative (inverted) input signal
>    of the adjacent inputs. (Acting as a 2-dimensional reversible
>    attenuator)
>
> (2) Distributing one input to 4 outputs (2-dimensional or "quad"
>     panning)
>     Use this as "Azimuth coordinator" for a real Quad system, or
>     connect two of the outputs to the effect send of a true stereo
>     reverb in an ordinary stereo system.
>
> (3) "Mode" switch, applies to both (1) and (2):
>     a) normal panning / crossfade: When joystick is in center,
>        result is a mix of 50% X and 50% Y.
>     b)  center zero: When joystick is in center, there is no output
>        signal at all. This means independent selection of 4 different
>        sources, for instance.
>
> I don't remember circuit details, but I think I found a way to do it all
> with just a SSM2024 and 2p2t switches - kind of matrix connection.
>
> JH.
>
>
>
>
>
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> New Music Site needs Raters for Rap songs now. Some compensation to
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> http://click.egroups.com/1/3345/3/_/529958/_/955580423/
> ------------------------------------------------------------------------
>
>

--- jwbarlow@... wrote:
> 
> Thanks Ivan for the pics of the Catstick (what? they couldn't find room for a 
> drink holder on that one?) and EML joysticks -- both look very powerful. Any 
> idea what these did/do cost?
> 

I don't know what the EML sold for orignally but any that you find now are
"collector's pieces" and seem to cost around $500-$600 (an awful lot for what is
just 2 pots some jacks and a few resistors).  The Catsticks are much nicer with a
lot more features (two LFOs and some VCAs), and are a bit less expensive but still
hard to find.  There is allegedly a stack of Catsticks as New Old Stock someplace
that the owner hasn't gotten around to digging out to sell.  Maybe this is turning
into an Analog Legend...

Regarding joystick placement, I'm strongly in favor of horizontally
mounting/placement near the synth and/or controller.  The horizontal angle of
orientation does not seem to be a problem.  I have used one that has the axis at a
45 degree angle to the keyboard and I've had no problems feeling which way to push
or pull to get the desired X/Y coordinate.  I think this would be much harder on a
vertically mounted panel.

Eric

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