KrakenX Documentation

Python script to control NZXT cooler Kraken X52/X62/X72 in Linux and Windows.

State of this project:

This project is working stable for all supported devices. One major contributor of this project created another more generic solution supporting loads of hardware devices, with a rich feature set, good documentation and active maintenance. Try it out:

https://github.com/jonasmalacofilho/liquidctl

Supported devices:

• NZXT Kraken X52/X62/X72 (Vendor/Product ID: 0x1e71:0x170e)

Note: It's possible that other devices are supported as well

See protocol for details about USB communication.

Python pip note:

The public Python pip package installed with the pip install command might be outdated. You can check the pip release history and Install from source if a newer version is required.

Linux installation:

sudo python3 -m pip install krakenx

Linux How-Tos:

Auto run the KrakenX colctl script on bootup.

Windows installation

Krakenx can be installed using PIP (use Python 3, no administrative privileges required):

python -m pip install krakenx

colctl works with user privileges. Other accounts may need PATH updates for Python main and script folders in system environment (only available in user environment by default).

The colctl command might only work in a Unix shell like git bash. Use colctl.py in Windows command line environments instead which just redirects your command.

If Zadig was previously used to replace the Windows driver for the Kraken cooler, follow the instructions to restore the original driver.

It is also necessary to install the Libusb DLLs, which can be found in the official releases. For example, extract the MS64 DLLs from libusb v1.0.21.7z to the system or active Python installation directory (e.g. C:\Windows\System32 or C:\Python36).

Install from source

From cloned project source folder execute (use sudo on Linux, user account on Windows):
python -m pip install -e .

To uninstall use: python -m pip uninstall krakenx

Usage:

Use sudo on Linux. Use colctl.py instead of colctl in Windows command line environment without Unix support.

There are 8 separate LEDs on the rim, and text color is controlled separately too. There are 7 different color modes: Solid, SolidAll, Breathing, Pulse, Fading, CoveringMarquee, SpectrumWave which are controled via command line flag --mode.

Control lights using --mode, --animation_speed, --color_count, --color0, --color1, ... --color7, as well as --text_color.

Depending on mode, different flags are used:

Solid

Only use flag color0, if not set it will have default color(red), example:
colctl --mode solid --color0 50,0,90

Solid All

Use flags text_color and color0-7, colors that are not set will have default color (red), example:
colctl --mode solidall --text_color 0,255,0 -c0 50,0,90 -c1 40,50,60

Breathing, Pulse, Fading, Covering Marquee

Set flags text_color, animation_speed, color0-7 and color_count. If text_color is not set, the current animation color will be used as text color. Flag color_count needs only to be set when there is more than one color flag and it represents number of colors being used, example:
colctl --mode fading --color0 50,0,90 --color1 56,98,0 --color2 20,20,20 --color3 0,90,90 --color_count 4

Marquee, Police, Spinner

Set flags color0-1 and color count. Text color is always black. Examples:
colctl --mode spinner --color0 9,33,71 --color1 2,7,15 --color_count 2 --animation_speed 2
colctl --mode marquee --color0 9,33,71 --color1 2,7,15 --color_count 2 --animation_speed 0

Chaser

Color flags are ignored. Called "Tai Chi" in CAM software.

Spectrum Wave

Only use flag animation speed, if flag is not set it will have default value (0). Example:
colctl --mode spectrumwave --animation_speed 3

Fan and pump speeds

Fan and pump speeds can be controled via the --fan_speed and --pump_speed options. They are always set in duty percentages (multiplied by 100), and can either be fixed values (by passing a single integer number) or profiles depending on liquid temperatue (by passing multiple comma-separated (<temperature>, <speed>) tuples).

colctl --fan_speed 50 --pump_speed 60 [...]
colctl --fan_speed "(20,30),(30,50),(40,90),(45,100)" [...]

If either flag is not set, a default profile will be applied in its place.

See also colctl --help

Note: Solid and Solid All mode settings are not remembered after restart, I think that is due to the firmware bug.