I got this working on FBALibretro, but not on Mame.

Really looking forward to bluetooth and wifi support.  Hopefully sometime this year I'll be able to start contributing.

Just wondering if anyone here has had luck with pairing their 8bitdo 30 Pro with a Pi 3?  I know 8bitdo controllers connect flawlessly with retropie, but I'd rather use recalbox if I have my choice.  Any help would be appreciated.  I'm on version 4.0 Beta 2 using the latest firmware from 8bitdo. The controllers work fine when connected directly through USB. Reference for bluetooth connectivity - https://www.reddit.com/r/RetroPie/comments/49nx8z/8bitdo_sfc30_raspberry_pi_3/