Elgato Key Light Controller

Elgato Key Light controller for Linux distributions

• elgato-keylight: GUI
• elgato-keylight-cli: CLI

Installation

From the AUR

aura|paru|yay -S elgato-keylight

or

git clone https://github.com/monadplus/elgato-keylight-aur
cd elgato-keylight-aur
makepkg -si

Nix

Coming soon..

Apt

Coming soon..

Building from Source

1. Install Rust https://www.rust-lang.org/tools/install
2. Compile and install executables

   cargo install --git=https://github.com/monadplus/elgato-keylight --force

   • To enable tray icon support:

     cargo install --git=https://github.com/monadplus/elgato-keylight --bin=elgato-keylight --features=tray-icon --force

3. Don't forget to add to folder to your PATH

   $ echo 'PATH="$HOME/.cargo/bin:$PATH"' >> ~/.bashrc

Dependencies

Required:

• libc
• openssl
• avahi and avahi-browse

Optional:

• Desktop notifications: libnotify
• Tray icon: gtk3, xdotool, and libappindicator

How to install

• Apt: $ sudo apt-get install -y build-essential libssl-dev avahi-daemon avahi-utils libnotify-dev libgtk-3-dev libxdo-dev libappindicator3-dev
• Pacman: $ sudo pacman -S openssl avahi libnotify gtk3 xdotool libappindicator-gtk3

Tested on

• Arch Linux (stable 6.9.1)
• Ubuntu 24.04 LTS

Usage

GUI

$ elgato-keylight

Features:

• • Discovers devices on a background thread

CLI

$ elgato-keylight-cli --help

Elgato Key Light controller for Linux

Usage: elgato-keylight-cli --ip <IP> --port <PORT> <COMMAND>

Commands:
  status            Status: on/off, brightness, temperature, etc
  toggle            Toggle (on/off)
  incr-brightness   Increase brightness by 10%
  decr-brightness   Decrease brightness by 10%
  incr-temperature  Increase temperature by 10%
  decr-temperature  Decrease temperature by 10%
  set               Set values for brightness and temperature
  help              Print this message or the help of the given subcommand(s)

Options:
      --ip <IP>      IP address
      --port <PORT>  API port
  -h, --help         Print help
  -V, --version      Print version

To discover the IP of your Elgato Key Light you can use:

$ elgato-keylight-discover
[
    Resolved {
        base: MdnsPacketBase {
            interface_name: "enp1s0",
            internet_protocol: V4,
            hostname: "Elgato Key Light 88DD",
            service_type: "_elg._tcp",
            domain: "local",
        },
        service: Service {
            name: "_elg._tcp",
            hostname: "elgato-key-light-8d7c.local",
            ip: 192.168.1.100,
            port: 9333,
            data: [
                "\"pv=1.0\" \"md=Elgato Key Light 20GAK9901\" \"id=FF:6A:9D:30:B1:6E\" \"dt=53\" \"mf=Elgato\"",
            ],
        },
    }
]

Docker

Not working https://github.com/monadplus/elgato-keylight/issues/4

$ docker build --tag=elgato-keylight .
$ docker run -it elgato-keylight:latest

Contributing

Contributions are welcome!

Please, if you intend to do a big change, open an issue first.