Rudimentary wireless gamepad conversion. Advice?

[Gruso]

I'm pondering the idea of turning my GP2X into a tabletop unit, along the lines of a Chumby. The design requires use of an external controller in place of the face buttons, for which a SNES controller is ideal. This would involve wiring from the GP2X PCB back to a custom controller port, and of course modding the SNES controller with a matching cable and plug.

I'd really like to make it wireless though. I'm thinking along the lines of 12 digital I/O channels, which is a little clunky but keeps things simple (12 wired inputs at the Tx end, 12 wired outputs at the Rx end).

I know such things do exist, but for the most part they're on another planet as far as my requirements go:

http://www.data-linc.com/plantlinc/plr580.htm

This one is getting closer:

http://www.electronickits.com/kit/compl ... ck1615.htm

...but IR and electromechanical relays are not really suitable.

Surely something compact, low powered and with solid state outputs must exist somewhere in the world. Does anyone know of such a thing?