https://github.com/stridsvagn69420/rpi-fanctl

Raspberry Pi GPIO PWM fan controller
https://github.com/stridsvagn69420/rpi-fanctl

gpio pwm pwm-fan pwm-fan-controller raspberry-pi raspberry-pi-4 raspberrypi rpi4

Last synced: 5 days ago
JSON representation

Raspberry Pi GPIO PWM fan controller

• Host: GitHub
• URL: https://github.com/stridsvagn69420/rpi-fanctl
• Owner: Stridsvagn69420
• License: eupl-1.2
• Created: 2024-08-20T01:32:07.000Z (about 1 month ago)
• Default Branch: master
• Last Pushed: 2024-09-03T21:12:48.000Z (30 days ago)
• Last Synced: 2024-09-28T00:42:48.119Z (5 days ago)
• Topics: gpio, pwm, pwm-fan, pwm-fan-controller, raspberry-pi, raspberry-pi-4, raspberrypi, rpi4
• Language: Rust
• Homepage:
• Size: 9.77 KB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# rpi-fanctl

Raspberry Pi GPIO PWM fan controller

A program that uses the hardware PWM of a Raspberry Pi's GPIO 18 pin to properly control a 5V fan. Currently it's just a quick test that uses the `rppal` crate, but in the future this project is supposed to be a daemon that features:

- A fan curve (X: temperature; Y: duty cycle)

- IPC/pseudo files to read and set stats during runtime

- Dedicated daemon user (does not run as root, daemon user is priviledged, e.g. `gpio` group)

- Support for Systemd, OpenRC and runit

- Automatically check if `/boot/firmware/config.txt` is configured correctly

This is sufficient for my needs, but here are some things I might add to this project:

- (Point out that the fan can *technically* be any voltage as long as the MOSFET gate switches with just 3.3V and supports the fan's voltage)

- Make use of the second hardware PWM channel (e.g. secondary fan)

- Read the tach value on 4-pin PWM fans



runfs structure:

```sh

/run

├── rpi-fanctl

│   ├── rpi-fanctl.pid

│   └── rpi-fanctl.sock

```