[sdiy] My Joystick Design

[Rhen, Kris]

I should add that 
a) One constraint is that the offset is not attenuated by the joystick (thus
it is in a following stage), and its range is +-5v (thus the resistor
values) - though I may make it more.
b) This simulates in ElectronicsWorkbench and performs exactly as I want it
- but does that really mean anything? :-)
c) Any way to reduce the number of amps?
Thanks again all!
KRIS

-----Original Message-----
Ok, please no laughs.  I'm still a bouncing baby newbie, but I bought
some of those MECI joysticks and want to make some controllers out of
them.  The first one's schemo is here

http://www.stucki.com/krhen/downloads/joystick.gif
<http://www.stucki.com/krhen/downloads/joystick.gif>  

(one axis only shown) Its fairly simple.  Takes either a constant
voltage (from the +15v source) or some input switched at the jack, so it
either functions as an attenuator or a pure CV source.  The input is
ranged, then the joystick moves from 0 to the range.  Then, there's an
offset pot that takes it +- about 5v.  Both axes are the same.  Any
comments/suggestions/optimizations?  I'm particularly not sure on the
input/output impedance thing.

The other design is the same but the joystick acts as a reversible
attenuator (I'll show that one later). Thanks all 
KRIS 

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