Logitech Unifying Protocol Implementation

This project provides a free and open-source C library that implements the proprietary Logitech Unifying protocol, aiming for Arduino compatibility while being compiler and hardware agnostic. The primary objective is to facilitate the creation of custom keyboards and mice that work seamlessly with Logitech Unifying receivers.

Features

• Timing-critical packet transmission: Ensures efficient communication with robust performance.
• Pairing with a receiver: Simplifies the process of connecting devices to Logitech Unifying receivers.
• HID++ error response payloads: Handles error conditions effectively within the HID++ framework.
• Encrypted keystroke payloads: Protects user input through encryption mechanisms.
• Mouse payloads: Supports mouse functionalities within the implementation.
• Multimedia payloads: Allows control of multimedia features.
• Wake up payloads: Enables wake-up functions for devices.

Example Usage

An example provided for Arduino demonstrates the use of the RF24 library. For more information, visit the RF24 GitHub repository.

Future Development

The project aims to expand and improve its capabilities with the following enhancements planned:

• Proper HID++ response payloads
• Additional usage examples
• General code cleanup

Additional Resources

For further exploration and research, check out the following resources:

• Hacking Logitech Unifying DC612 talk
• nRF24 pseudo-promiscuous mode
• KeySweeper
• MouseJack
• KeyJack
• KeySniffer
• Of Mice And Keyboards
• Logitech HID++ Specification
• Official Logitech Firmware

This project is an essential resource for those interested in delving into device compatibility with Logitech's ecosystem, making custom input devices more accessible.