https://github.com/ananace/gpio_fan

A small C++ GPIO fan daemon
https://github.com/ananace/gpio_fan

Last synced: 12 days ago
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A small C++ GPIO fan daemon

• Host: GitHub
• URL: https://github.com/ananace/gpio_fan
• Owner: ananace
• License: mit
• Created: 2022-07-07T14:19:31.000Z (almost 4 years ago)
• Default Branch: master
• Last Pushed: 2022-07-07T14:19:43.000Z (almost 4 years ago)
• Last Synced: 2025-11-16T14:12:23.776Z (8 months ago)
• Language: C
• Size: 5.86 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.txt

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README

          
GPIO Fan daemon

===============

A small daemon for controlling a fan on a GPIO pin, similar to the dtoverlay gpio-fan.

Default configuration is to handle a fan on pin 18, activating it at 55°C and deactivating it again at 45°C.

The `-t`/`--temp` option will set a range in the same way as the dtoverlay gpio-fan, though with floating point values. (so 75°C would be 75, whereas the gpio-fan dtoverlay would want the value 75000)

```

Usage: gpio_fan [OPTIONS...]

Args:

  -p --pin PIN      Set the GPIO pin to toggle

  -n --interval SEC Set the delay between temperature checks (in seconds)

  -t --temp TEMP    Set temperature range as in gpio-fan

  -m --min MIN      Set turn-off point

  -M --max MAX      Set turn-on point

```

A systemd unit is provided which is suitable for use with Raspberry Pi OS or Debian, for Alpine or other non-systemd dists you can run it with rc.local or similar methods.