12 Jun
2009
12 Jun
'09
6:41 p.m.
Bill Sudbrink wrote:
Well, PC and Apple joysticks (easy to find) are
between 100k
and 150k Ohms... 20 to 30 times the desired values. Some RC
transmitters may have 10k pots. My only knowledge of RC
transmitter pot values is a couple of web pages about retro-
fitting a board with a PIC on it into old analog transmitters
to get digital control of the model. The pages say things
like "If you have 5k pots, install this resistor and cap.
If you have 10k pots, install this other resistor and cap."
etc...
I'm not certain, but I think 100K or 150K will probably work OK, and it
won't damage the ADC to try it.
I'm not completely certain about PC joysticks, but joysticks made for
the Apple II are wired with electrical connections to the wiper and one
end only. The other end may be open, or connected to the wiper.
Eric