[simpits-tech] Slide potentiometers

[Matt Bailey]

Thanks Jeroen. IIRC I was getting max resistance across two lugs, I
don't recall what the other two read. FWIW, these will be going into a
Plasma unit. I did verify the resistance changes as the wiper moves,
just wanted to make sure I had the ground situation squared away so I
don't zap something. :)

	-Matt Bailey

Jeroen Huijben wrote:
> 
> My guess would be that the two outer kugs are the outer ends of the pot and
> that the two middle lugs connect to the wiper.
> 
> I don't know how you tested it but if my guess is right then the resistance
> between the outer lugs should be fixed and equal to the pot's stated
> resistamce and the resistance between the inner lugs should be 0 regardless
> of wiper position.
> the resistance between an outer and an inner lug should change as you move
> the wiper.
> 
> If you want to mount the pot as a variable resistor (like on a gameport)
> then you must connect one wire to an outer lug and one wire to an inner lug.
> It won't matter which inner lug and by changing the outer lug you can invert
> the pot's response.
> 
> If you want to mount the pot as a potentiometer (like in modern digital
> joysticks) then you must connect the supply voltage and the ground to
> opposite outer lugs and the signal wire to an inner lug.
> Switching outer lugs will invert the response.