I couldnt find a schematic for EX-500 on here, but I can't see why you couldnt add a 10K joystick into one. It probably has the same Main PCB as a Poly 800 M1.
On a HAWK'd Poly 800, the pitchbend feature on the keyboard is disabled when the joystick is in parameter edit mode. So you cant edit a parameter and do a pitchbend at the same time.
I don't know if Mike managed to keep/add joystick code in the EX800 version of HAWK software so it can read the voltages from a pair of pots.
That's the key to making it happen more than anything, I'd think.
- Blaine
--- In korgpolyex@yahoogroups.com, "k9k9dog" <domgoold@...> wrote:
>
> how about a Sony Playstation type joystick knob
> for the EX800, since it doesn't have one? doesn't
> stick too far out (also has additional click down
> action for???something else...)
> isn't the joystick used for entering parameter data
> on the poly800 mk1+2 kybd versions?
>