[sdiy] XY controller build?

[Joe]

Thanks to all!


On Wed, 2016-01-06 at 13:08 -0500, Terry wrote:
> Hi All,
>   I made a complete scratch build of a Moog 959 X/Y controller. There is no  
> real circuitry other than a limiting resistor to the 959 and it used audio  
> taper AB type J 10K pots. Had to be carefull setting it up, as the pot  
> travel was about 30 or so degrees and had to be setup with zero volts at  
> the center of the stick. Otherwise the full voltage at either end CW or  
> CWW was enough to short out your power supply so care is needed setting up.
>   The advantage of the Bob Moog design was direct connection to high  
> quality pots with no backlash. The AB type J pots had a rotational  
> resistance that was the action of the stick. Cheap pots will give less  
> than perfect action, but with those old AB type J pots the action was  
> excellent.
>   The other advantage was the parts required were all easy to fabricate and  
> the one L bracket to connect both pots was the real design advantage over  
> the typical consumer joystick.
>   I wrote out my project on the Moog website. Hopefully the photos show as  
> on some browsers they do not. But should give some ideas for a scratch  
> build X/Y controller.
> Link here:
> http://forum.moogmusic.com/viewtopic.php?f=1&t=21438&p=129221&hilit=959+x#p129221
> 
> Terry
> 
> > Hello, I am considering building an xy controller. What I'd really like
> > to do is modify a trs-80 joystick. It is 5 volts and that is what I need
> > but I am betting the sprung return to neutral would defeat the
> > usefullness. Has anyone ever tried this?
> >  Also, as an alternative I found Ken Stone has boards for sale, but I
> > couldn't find any other kit? Anyone know of another?
> >  Thanks. Joe Frey.
> >
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> 
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