The primary source for downloading MMJoy2 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).
Draft Paper: Implementation and Setup of MMJoy2 for Custom HID Controllers
1. IntroductionMMJoy2 is an open-source firmware and software suite designed to transform low-cost Arduino boards—specifically those based on the ATmega32U4 microcontroller like the Arduino Pro Micro or Leonardo—into advanced USB HID (Human Interface Device) controllers. It is widely used in the flight simulation community to create custom joysticks, throttles, and rudder pedals. 2. Core Features
High Input Capacity: Supports up to 128 buttons using diode matrices or shift registers.
Axis Precision: Provides support for multiple high-resolution analog axes and digital magnetic sensors.
Shift Register Support: Utilizes ICs like the 74HC165 for efficient wiring of large button counts.
No Coding Required: Features a graphical user interface (JoySetup) for configuring the board without manual programming. 3. Hardware Requirements
Microcontroller: Arduino Pro Micro (ATmega32U4) is the preferred "drop-in" board due to its native USB support.
Components: 1N4148 diodes are required for button matrices to prevent "ghosting".
Peripherals: Compatibility includes rotary encoders, potentiometers, and Hall effect sensors for high-precision axes. 4. Implementation Workflow mmjoy_en/firmware and software release/MMJoy2.7z at master mmjoy2 download updated
Here’s a blog post draft optimized for the current landscape of DIY flight simming. It addresses the "updated download" intent by clarifying where the project stands today and providing the most reliable links for 2026. MMJoy2 in 2026: Finding the Latest Downloads & Setup Guide
If you’re building a custom flight sim button box or modding an old joystick, MMJoy2 is likely the first name you’ll encounter. But if you’ve spent any time searching for an "updated" version recently, you’ve probably noticed that many old links are dead and the official English wiki has been archived since 2018.
So, is MMJoy2 still the king of DIY controllers? Here is the current state of the project and where to get the most stable files right now. Where to Download the Latest MMJoy2
While development on the original branch has slowed, the community still maintains "stable" mirrors. For 2026, don’t look for a "2026 version"—the most "updated" stable release remains the v20160818 BETA or similar late-2016 builds.
The English Mirror (GitHub): The most reliable place to grab the full software and firmware package is the MMJoy English Wiki on GitHub.
The Firmware & Software Archive: You can find the specific .7z package containing the configuration tool (JoySetup.exe) and firmware blobs in the Firmware and Software Release folder.
The Original Project Site: If you need deep technical documentation (and don't mind using a browser translator), the Original MMJoy Project Site is still the ultimate source for wiring diagrams and firmware history. Quick Setup: 3 Steps to Get Started
Hardware: You’ll need an Arduino Pro Micro (ATmega32U4) or a Teensy 2.0.
Flash the Firmware: Connect your Arduino, put it into bootloader mode (usually by shorting the RST and GND pins), and use the JoySetup.exe tool to upload the MMJoy2 firmware. The primary source for downloading MMJoy2 is the
Configure: Once flashed, the device will appear as "MMJOY2." You can then map your axes, buttons, and shift registers directly in the configurator without writing a single line of code. Should You Use MMJoy2 or FreeJoy?
In 2026, many builders are moving toward FreeJoy. Here’s how they compare:
MMJoy2: Runs on cheap, older 8-bit hardware like the Arduino Pro Micro. It’s "set it and forget it," but it is no longer actively updated.
FreeJoy: Designed for the more powerful STM32 microcontrollers. It is fully open-source and actively maintained, offering more advanced features for high-end builds. mmjoy_en/firmware and software release/MMJoy2.7z at master
mmjoy_en/firmware and software release/MMJoy2. 7z at master · MMjoy/mmjoy_en · GitHub. README.md - MMjoy/mmjoy_en - GitHub
This repository was archived by the owner on Oct 31, 2018. It is now read-only. How to build a reconfigurable firmware ? - Arduino Forum
The updated MMJoy2 interface looks like a spreadsheet. This is where the magic happens.
If you are still using the 2017 release, you are missing critical features. The updated MMJoy2 (2023-2025) includes:
MMJoy2 remains one of the most powerful pieces of software for the DIY flight simulation community. It allows users to turn cheap Arduino Pro Micro or Teensy boards into fully functional HID joystick controllers. Step 4: Configure Your Pins The updated MMJoy2
However, because the project is open-source and managed by a small community, the "official" download links often change or get buried in forum threads. Here is the updated breakdown of where to get the software and how to ensure you are using the current version.
The most active fork is maintained by Vadim Kuznetsov (often found as vadikus or Kuznetzov on forums). The updated repository is located at:
github.com/MMjoy/mmjoy2-firmware
Navigate to the "Releases" section. Look for the latest tag (e.g., MMJoy2_v2023.12.28 or newer). Here you will find:
MMJoy2_Firmware.hex – The code to flash to your board.MMJoy2_Setup.exe – The Windows configuration tool.Note: Do not download raw code from the master branch unless you are a developer. Always use the "Releases" tab for stable, tested builds.
While newer firmware options like FreeJoy exist, MMJoy2 is still preferred by many for two reasons:
The original author’s website (mmjoy.hellmir.ru) has been intermittently offline. The current repository hosting the working, updated MMJoy2 download is maintained by the community under the MMJoy2 Reloaded project, which consolidates all patches.
Even with the correct file, users often run into errors. Here are the top 3 fixes for 2025.