I have been working with a Arduino Leonardo, for a joystick interface using "Big Joystick"
in my final configuration I will have a Suncom Dual Throttle (Warthog), a pro flight controller, and home built pedals for differential braking. made from aircraft parts but for now a lash up of Thrustmaster and CH Products Pro Pedals.
But currently and using a Saitek X35 which I am converting to USB with Arduino Big Joystick

I am intrigued about using MMJoy2 but when I looked at github all I found was Micro$ Windows junk. My simulator NexGen is a pure C/Linux product. Your visual page will have to be re-written
using QT for a X-window environment. So Is there any way that I could acquire source code??

Thanks
Cris H.
My Blog NexGen