https://sites.google.com/site/gregsqna/gaming/raspberry-pi/bluetoothcontrollers/sn30gamepadpro
https://www.amazon.com/8Bitdo-SN30-Controller-Windows-macOS-Android/dp/B0748S1VDC?th=1
http://www.8bitdo.com/sn30pro-sf30pro/
Do NOT pair in switch mode (Y+Start). Refuses to Pair in this mode now.
Use Android Mode (B+Start). If by mistake you alter change mode all things will break.
E4:17:D8:56:51:79 - Pro Controller
Hotkeys
Hotkeys enable you to press a combination of buttons to access functions such as saving, loading, and exiting emulators. The following chart shows the default hotkey combinations. By default, the hotkey is select so that means you hold down select while pressing another button to execute a command. Note that hotkeys are only specific to the retroarch/libretro based emulators.
Hotkeys Action
Select+Start Exit
Select+Right Shoulder Save
Select+Left Shoulder Load
Select+Right Input State Slot Increase
Select+Left Input State Slot Decrease
Select+X RGUI Menu
Select+B Reset