: Arduino Pro Micro (ATmega32U4) is the preferred "drop-in" board due to its native USB support.

Click or Write . A progress bar will fill, concluding with a "Success" notification. Your board will reboot and will now be recognized by Windows as an "MMJoy2 device." Advanced Configuration: Axes, Buttons, and Shift Registers

Perfect for radio stacks, trim wheels, and autopilot panels.

Once you have downloaded the MMJoy2.7z archive, follow these instructions to get your hardware running.

Before downloading, ensure your setup meets the unofficial updated requirements for modern Windows:

Assign your physical analog pins (e.g., A0, A1) to virtual Joystick Axes (X, Y, Z, Rudder, Throttle).

Link: github.com/MHeironimus/MMJoy2 Note: The last official commit is from 2018, but the repository contains the stable source code. For binaries, see below.

The original MMJoy project has not been updated by the original author in several years. However, the community has kept it alive with "forked" versions that fix bugs and improve compatibility.

Once the firmware is flashed, open (no installation required, runs portable).

Use a small wire or paperclip to short these two pins together (double-tap).

Open your Windows and look under Ports (COM & LPT) to find the COM port number assigned to your board. Step 2: Bootloader Activation (The Trick)

Look at the COM Ports dropdown menu. Take note of the available ports.

The most popular, highly affordable, and compact choice. Ensure you purchase the 5V / 16MHz variant rather than the 3.3V version for maximum compatibility with sensors.

Later firmware versions introduced mouse and keyboard emulation, support for WS2812 LED strips, MAX7219 7-segment displays, and enhanced debounce filtering for clean button inputs.

Allows for firmware flashing and configuration without writing code. MMJoy2 Download Updated: Latest Version (2026)

The primary source for downloading is the MMJoy English GitHub Repository . It is important to note that the repository was archived on October 31, 2018, making it a "read-only" archive. Despite being archived, it remains the standard location for accessing the most stable "updated" firmware and software release package ( MMJoy2.7z ).