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PyFan
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Fan control utilising hwmon and pid.
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Giovanni Harting 9d84161759 added config example for multiple sources, some doc improvements 2 months ago
.gitignore made .gitignore include idea 1 year ago
LICENSE relicense to GPLv3 11 months ago
README.md Update 'README.md' 10 months ago
config-example.yaml added config example for multiple sources, some doc improvements 2 months ago
pyfan.py added support for multiple temperature sources, highest wins 2 months ago
pyfan.service Switched back to sbin 1 year ago

README.md

PyFan

This python script utilizes linux's hwmon interface and a PID controller for fan controlling. No external dependencies besides simple_pid and PyYAML are needed.

Installation

Archlinux

AUR package

Other

Put pyfan.py into /usr/local/sbin and give it +x.

Usage

Put your config in /etc/pyfan (see example config) and enable pyfan as a service (see example service file).

Finding your fans

It is recommended to use pwmconfig from lm_sensors to detect your fans.

To know which hwmon is what device and what pwm controls what fan, the following commands can help you:

List all devices + names: tail /sys/class/hwmon/hwmon*/name

Enable control for a specific pwm: echo 1 > /sys/class/hwmon/hwmonX/pwmX_enable

Set fan speed: echo [0-255] > /sys/class/hwmon/hwmonX/pwmX

After you have figured out which fan is controlled by what pwm, you can adjust your config. You can have as many thermal zones as you want, just repeate them like shown.