An universal fan control daemon for any single board computer.
gpio-fan-controller drives a defined GPIO with a PWM signal, that can be used to drive an external fan (through an npn transistor, for example). It works with any single board computer, through libgpiod.
A simple algorithm monitors CPU temperature and drives a PWM output, so it tries to reach a target temperature (45 deg C by default). In practice, this can be seen as a turn-on threshold temperature.
First, install the prerequisites:
- g++
- make
- git
- libgpiod_dev, gpiod
Clone this repository:
git clone https://github.com/tomek-szczesny/gpio-fan-controller.git
Inspect the first 30 lines of gpio-fan-controller.cpp. Here, you must configure which GPIO you wish to use.
You can use sudo gpioinfo to find the correct gpiochip and line numbers.
Next:
make build
sudo make install
From now on, the daemon should be installed and working.