[sdiy] pot values

[Tom Arnold]

On Tue, Mar 14, 2006 at 04:47:24PM -0500, Rafael Cohen wrote:
>    I usually use 1meg pots for this.  The pots in the joystick are 150k.

150k is a common value.  To top it off you only get about 1/2 of the range
of the pot just to make things more fun.

>    Is there any workaround for this?  The only thing I can think of is to
>    use some sort of range switch or something.  Not 100% sure how to
>    implement that.

Create a voltage with the joystick to drive a VCO unstead of tuning the
oscillator directly.

Try this circuit : 
http://www.cgs.synth.net/modules/joystick.html

To offset the lack of full pot movement on the joystick, what I did was
added a trimmer at the top and bottom, each going to +-15v that way I could
set the voltage at each end of its travel.  That by itself should give you
a 0-10volt ( or whatever you set actually ) range.  You might not even need
the additional circuitry.

I'm a big fan of joystick controllers :-)

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