I would need a cable that goes from Side 1
Micro-USB
and
the current Apple-plug (for Tablets)
to harness (Side 2) that can be soldered to 6 micro-switches for a stick and 2 action buttons (or 3)
An USB-plug to charg the tablets on side 2 would be good, for the use with the original charger on either system.
Is an app needed for that? The entire system shall work just like the Icade to play retro games. Blutooth would be a way to use too, but I think to find such a kit would be even harder.
If you have other suggestions I very happy to hear.