MMJoy2 remains the gold standard for DIY flight sim enthusiasts wanting to turn cheap Arduino boards into powerful, professional-grade joystick controllers .

Allows buttons to change functions based on "shift" states, effectively doubling or tripling available controls. Download & Hardware Requirements

Windows is assigning a conflicting HID driver. Fix: Open Device Manager -> Universal Serial Bus devices . Right-click the "Unknown Device" -> Update driver -> Browse my computer -> Let me pick from a list -> Select USB Input Device . Reboot.

Native support for rotary encoders, toggle switches, and shift registers (for high-density button matrices). Shift Layers:

However, for full-featured, no-compromise DIY controllers, still wins.