First post here, thought I'd try and be constructive. 8) I stumbled onto this site during my research into converting a Saturn gamepad to USB and it helped immensely, I hope that by posting (my first) a guide here I could contribute back. So here goes:
http://kagaku.github.com/2012/07/28/Sega-Saturn-gamepad-to-USB.html (http://kagaku.github.com/2012/07/28/Sega-Saturn-gamepad-to-USB.html) (attached as a PDF as well, incase my blog doesn't exist in a few years and someone is reading thisl)
Definitely a learning experience, but fun overall. My next goal is a conversion of two Saturn ports (from an old Saturn deck) to USB using the same Teensy board. I should have plenty of inputs to handle it, my concern is presenting the device as two separate HID devices (so I can have two separate hats, buttons, etc..).
Ah, sorry about that. I've upped the attachment space so it shouldn't happen again. Thanks for letting me know.
Nice first post! Welcome aboard. =)