The Docker Image is based on Pythons slim Image.
The container needs access to the device: /dev/gpiomem This can either be accomplished by adding it as a device, or by adding it as a Volume, if you are running this image in a swarm.
The following Docker Environment Variables can be set:
| Variable | Default | Description |
|---|---|---|
| FAN_START_PERCENTAGE | 50 | value at which the Fan should start |
| FAN_OFF_PERCENTAGE | 0.0 | Percentage at which the fan is stopped |
| FAN_MIN_PERCENTAGE | 1.0 | Percentage minimum controllable value. |
| FAN_MAX_PERCENTAGE | 100.0 | Percentage up to which the fan should be controlled |
| FAN_TACH_IN_PIN | 24 | GPIO Pin that is connected to the fans TACH-output |
| FAN_TACH_PULSE_PER_REV | 2 | How many TACH-pulses are provided per revolution of the fan |
| FAN_TACH_REFRESH_TIME | 1 | Time between fan-speed measurements |
| FAN_TEMP_OFF | 35.0 | Temperature lower of which the fan should be turned off |
| FAN_TEMP_TARGET | 40.0 | Temperature that should be reached |
| PWM_FREQUENCY | 25 | PWM-frequency in kHz |
| PWM_OUT_PIN | 18 | GPIO-Pin that the Fan is connected to |
| PWM_REFRESH_TIME | 1.0 | Time between temp-measurements & fan-speed calculations |
| PID_P_VALUE | 5.0 | P constant for the PID-controller algorithm |
| PID_I_VALUE | 5.0 | I constant for the PID-controller algorithm |
| PID_D_VALUE | 5.0 | D constant for the PID-controller algorithm |
Docker-rpiFan is a free docker image powered by other open source. I am not able to provide full support, however if you find any bugs or if you need a new feature you can create an issue. If you want to support my work you can do this through my ko-fi page:
