If you need the absolute latest "experimental" builds or specific firmware fixes (such as support for specific encoder types), the thread is the place to go.
This article provides a comprehensive overview, including the for 2026, installation instructions, and key features to enhance your setup. What is MMJoy2? mmjoy2 download updated
The core firmware flasher and configuration GUI tool. If you need the absolute latest "experimental" builds
MMJoy2 remains the gold standard for DIY flight sim enthusiasts wanting to turn cheap Arduino boards into powerful, professional-grade joystick controllers . The core firmware flasher and configuration GUI tool
MMJoy2 is a custom firmware developed by megaMOZG_kgb. It turns simple ATmega32U4 microcontrollers into advanced USB HID (Human Interface Device) controllers.
The core project files are safely archived and actively maintained by the simulation community across a few trusted repositories:
Trigger the bootloader on your physical board again (short RST and GND).