FreeMDU

FreeMDU is an open-source toolkit that provides both hardware and software solutions for communicating with Miele appliances through their often overlooked optical diagnostic interface, effectively offering an accessible alternative to the proprietary Miele Diagnostic Utility used by service technicians. This project includes reverse-engineered protocol support, a terminal user interface for diagnostics, and firmware that can act as a USB-UART bridge or standalone communication adapter for home automation systems. Developers and tinkerers can use FreeMDU to read diagnostic codes, monitor appliance internal states, and even integrate device feedback into platforms like Home Assistant using MQTT, making it valuable for repair, automation, and monitoring applications. The repository’s components are split into multiple subprojects.

Features

Reverse-engineered optical diagnostic protocol support
Firmware for USB-UART appliance interfacing
CLI-based diagnostic terminal utility
MQTT integration for Home Assistant and home automation
Modular protocol library for custom tools
Open-source and community extendable

Project Samples

Project Activity

See All Activity >

License

Apache License V2.0

Follow FreeMDU

FreeMDU Web Site

Other Useful Business Software

Ship Agents Faster

Transform your applications and workflows into powerful agentic systems at global scale.

Gemini Enterprise Agent Platform lets you rapidly build, scale, govern and optimize production-ready agents grounded in your organization's data. The platform enables developers to build custom or pre-built agents for virtually any use case. New customers get $300 in free credits.

Get Started Free

Rate This Project

User Reviews

Be the first to post a review of FreeMDU!

Additional Project Details

Programming Language

Rust

Related Categories

Rust Communications Software

Registered

2026-02-05

Similar Business Software

Rise Vision

Rise Vision is the all-in-one platform for digital signage, screen sharing, and emergency alerts designed to help organizations communicate, teach, collaborate, and improve safety. The cloud-based system integrates digital signage, interactive digital signage, screen sharing, and emergency...

See Software
3CX

3CX is a software-based, open standards IP PBX that offers complete Unified Communications, out of the box. Suitable for any business size or industry 3CX can accommodate every need; from mobility and status to advanced contact center features and more, at a fraction of the cost. Ideal for...

See Software
ManageEngine ADManager Plus

ADManager Plus is a simple, easy-to-use Windows Active Directory (AD) management and reporting solution that helps AD administrators and help desk technicians in their day-to-day activities. With a centralized and intuitive web-based GUI, the software handles a variety of complex tasks like bulk...

See Software
3Q

3Q GmbH is a leading European Video Platform provider for IT professionals and system administrators who demand absolute control over their streaming infrastructure. Unlike US-based providers who rely on external hyperscalers, 3Q operates a fully proprietary hardware and software stack, which is...

See Software
Odoo

Odoo is a fully integrated, customizable, open-source software packed with hundreds of expertly designed business applications. Odoo’s intuitive database is able to meet a majority of business needs, such as: CRM, Sales, Project, Manufacturing, Inventory, and Accounting, just to name a few. Odoo...

See Software
Cloudbrink

If you’ve ever dealt with slow VPNs, or clunky ZTNA agents that degrade app performance, you’re not alone. Many IT teams are stuck balancing security with usability—and often end up sacrificing both. Here is a different approach. The high-performance ZTNA service that is part of a personal...

See Software