[FEATURE]: Forced ventillation of terrarium using PWM fans with fan hubs

[Zubrania]

Is your feature request related to a problem? Please describe.
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Describe the solution you'd like
Add the ability to manage fan speed or multiple fan speed with FAN hubs to react on humidity/ temperature changes and react accordingly using forced ventilation

Additional context
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[theyosh]

I am not known with fan hubs. Do you have an example?

[DZJ8]

I am talking about devices like that https://noctua.at/en/nv-fh2 which can connect multiple 4 pin fans which can control speed and get actual RPM and be able to control fans, its speed to create scenario of "forced ventilation" in terrarium or just cool it down quicker than "natural ventilation"

[theyosh]

Hmm, I do not know if that can be supported. I do not know if you can connect the PWM hub to the Pi and controll it.
It could be possible that it behaves like an existing PWM dimmer. And that it could be supported.
RPM readout will never be supported. That is something specific for fans. PWM can also used for lights and heating, which does not provide an RPM value.

But this means that all fans are at the same speed when connected to this PWM hub.

So for now, it could be that it will work with TP. But I cant say for sure. And I am unable to test this.

[G4KCM]

There are two pwm channels that can be assigned to GPIO, I used them in a BBQ controller.