Re: Question on CH Mach III joysticks

[Michael J. Mahon <mjmahon@aol.com>]

Egan Ford <datajerk@gmail.com> wrote:
> On Aug 17, 1:53 am, Michael J. Mahon <mjma...@aol.com> wrote:
>> Antoine Vignau <antoine.vig...@laposte.net> wrote:
>>> On 15 août, 02:31, Eric Rucker <bhtoo...@gmail.com> wrote:
>>>> So, I know that there were both PC and Apple II versions of the CH Mach III.
>> 
>>>> And, I know that PC joysticks are (typically) 100k ohm, whereas Apple II
>>>> joysticks are 150k ohm. However, I've seen that some PC joysticks DO use 150k ohm pots.
>> 
>>>> So, what pots did the Mach III use, in both Apple and PC versions?
>> 
>>> I have one but I don't feel confident in opening it to give the answer
>>> to you.
>>> I've been using it for 25 years now and I want it to continue!
>> 
>>> Sorry,
>>> Antoine
>> 
>> You can measure the maximum resistance without opening it by connecting an
>> ohmmeter to the appropriate pins of the connector. (After all, this is how
>> the computer measures the resistance.  ;-)
>> 
>> -michael - NadaNet 3.1 and AppleCrate II:http://home.comcast.net/~mjmahon
> 
> I measured 120K on the x-axis (pins 2&5) and 130K (pins 2&8) on the y-
> axis of my Mach II.

So those are both within 20% of 150k--the usual pot tolerance. 

-michael - NadaNet 3.1 and AppleCrate II: http://home.comcast.net/~mjmahon