Re: HELP! APPLE Joystick pin layout and ...

[lgarde@scorch.apana.org.au (Leon Garde)]

szhang@bcm.tmc.edu (Shide Zhang) writes:

|Hi! there,
hello...

|I have an Apple joystick (the plate says: Apple IIe, IIc Model No
|A2M2002...) and I'd like to connect it to my PC clone. I'v known the pin

|                    bottun                                 PIN  
|another button -----1--------2----------------------------o 2 (5V DC?)

|                    3--------4----------------------------o 1 or 7
|                    |
|                    |----------------^^^^^^----------------o 3 (GND?)  
|                                      270 Ohm
"inside the apple //c" suggests using 1000 Ohm, but I'm sure the
difference between 5 mA and 25mA is NOT anything to worry about.

Also, Im sure that this resister is redundant (on an apple),
as I'm sure the logic in the game control input is normally off anyway.


|There is no ON/OFF response (as checked with an Ohmmter) when I
|press/release the button. I wonder if the buttons need power-on to
|function or both the buttons are bad?
Uh. I dont know exactly whats inside your joystick, but
I'm sure the switch is as you've shown.
When testing the swich you would find an open circuit for
off , and 0 ohms for on ??? you say you didnt find anything,
but how does your ohmeter go at measuring both  0 ohm and opencircuit? 


pin 1 is button 1, pin 7 is button 0; and thats all there is to know.
Except, 5v on the pin is on, 0 volts (or open circuit?) is off. 

|Thanks in advance!

ok, leon