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So, would anyone be interrested in a cheap ($15) open source USB control adapter
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rhys:
Firmware code and binary have been posted to my github.

Bug reports, comments, questions, and suggestions are all welcome.

https://github.com/Rhys79/Launchpad-Mame-Control
rhys:
Major update to the firmware, completely rewrote switch debouncing and USB transmit routines.

All of the switch inputs are fully debounced with very fast response time (~10ms).  Trackball input has been tested by a collaborator with a HAPP trackball, and also works excellent.

Can't beat a 30 switch + trackball (or dual spinner) input device for $15.

If there is any interest or questions, feel free to contact me.
michelevit:
i'm interested.
shrunkenmaster:
Looking good so far. Always nice to see a new interface!
rhys:
The gamepad/trackball firmware for the Launchpad dev board is complete, just waiting for feedback on any bugs I may have failed to squash.  I'm also wrapping up an 8 input keyboard encoder w/ dual spinner custom firmware for another member as a custom job.  The keyboard encoder firmware could easily be expanded to offer more inputs if there is interest in that as well.  It will be going up on Github as well once I've worked out the bugs (almost complete).

Input mappings and everything else anyone should need to get it up and running should be included in the Readme.  If anyone has specific questions on how to get it operational, let me know.  Any suggestions or customization requests can be left here or in PM.

Next up will be designing a custom board for the higher pin count chip if there is enough interest.
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