decrazyo / unifying

FOSS re-implementation of the Logitech Unifying protocol

Logitech Unifying Protocol Implementation

This project is an attempt to re-implement the proprietary Logitech Unifying protocol as a free and open C library. The library is intended to be Arduino compatible while remaining compiler and hardware agnostic. The goal of this project is to enable people to create custom keyboards and mice that are compatible with Logitech Unifying receivers.

Example

The provided Arduino example is dependent on the RF24 library. https://github.com/nRF24/RF24

TODO

• Add proper HID++ response payloads
• Add more examples
• General code cleanup

Done

• Timing-critical packet transmission
• Pairing with a receiver
• HID++ error response payloads
• Encrypted keystroke payloads
• Add documentation
• Add mouse payloads
• Add multimedia payloads
• Add wake up payloads

See also

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

unifying's Issues

I have a question.

First of all, I am not good at English. Please understand.

I start pairing on Unifying software and when I connect the device, it works well until the device presses the key.

But when I disconnect and reconnect the device, it doesn't work.

Every time I reconnect the device, I have to make a new pairing to make the device work.

I want the device to work without pairing when I reconnect the device if it's already paired.

What should I do?

I have a question.

I am not familiar with English, so please understand.

First of all, thank you for your great library.

I confirmed that my model name is C-U0007.

I used Uno board and nrf24l01.
I connected it like this.

Uno - NRF24L01

VCC- 3.3V
GND- GND
SCK- D13
MISO- D12
MOSI- D11
CSN- D7
CE- D8

However, these messages are repeated infinitely.

23:09:30.573 -> Channel: 20
23:09:30.573 -> Transmit: [0x00, 0x50, 0x01, 0x4B, 0x01, 0x00, 0x00, 0x00, 0x00, 0x63]
23:09:30.664 -> Channel: 23
23:09:30.664 -> Transmit: [0x00, 0x50, 0x01, 0x4B, 0x01, 0x00, 0x00, 0x00, 0x00, 0x63]
23:09:30.754 -> Channel: 26
23:09:30.754 -> Transmit: [0x00, 0x50, 0x01, 0x4B, 0x01, 0x00, 0x00, 0x00, 0x00, 0x63]
23:09:30.844 -> Channel: 29
23:09:30.844 -> Transmit: [0x00, 0x50, 0x01, 0x4B, 0x01, 0x00, 0x00, 0x00, 0x00, 0x63]
23:09:30.965 -> Channel: 32
23:09:30.965 -> Transmit: [0x00, 0x50, 0x01, 0x4B, 0x01, 0x00, 0x00, 0x00, 0x00, 0x63]
23:09:31.054 -> Channel: 35
23:09:31.054 -> Transmit: [0x00, 0x50, 0x01, 0x4B, 0x01, 0x00, 0x00, 0x00, 0x00, 0x63]
23:09:31.144 -> Channel: 38
23:09:31.144 -> Transmit: [0x00, 0x50, 0x01, 0x4B, 0x01, 0x00, 0x00, 0x00, 0x00, 0x63]
.
.
.

There is no response to pairing in the unifying software.
How can I connect it?