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From: jfischer@moose.cs.umn.edu (John D. Fischer)
Subject: Re: Voltage Controled Resistors?
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Date: Wed, 8 Feb 1995 18:57:59 GMT
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In article <3h528f$t13@hpscit.sc.hp.com>, teoallan@sgp.hp.com (TAI-LOON TEO ALLAN) writes:
|> Hi,
|>  I can only access the pots in the joystick, I cannot
|> know the internal schematics of the joystick output inside
|> the R/C transmitter, because there wont be any plans
|> available, so the only option is to tap onto
|> the potentiometers via a special IC.
|> 
|> Regds      
|> Allan
|> 

Most joysticks have variable resisters that have 3 leads.  One goes to
Power, one goes to ground, and one is the output.  The output is a
voltage.  If you can remove the joystick the center wire should be
the output voltage.  Connect this wire to the output of the D/A converter
and take the ground and connect it to the output ground on the D/A
converter.

John
