Is it possible to just get the PCB somewhere? I can't justify $100 for this, but I would love to build one using a 3d printed housing just to tinker with.
AmnNateThere is something you could do.
a Teensy usb pcb should be able to be read by a pc as a gamepad, and from there, you build onto it.
I had an idea yo make a custom macro pad a long time ago using one, but scrapped the idea when I figured out the g13 could show me performance data and act as a 66 key macro pad, considering making a fight stick with cherry keys but yea... this is as good as I got with it.