Best quick/easy way to control case fan speed?
#1
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Hello!

I have this case: https://kksb-cases.com/products/kksb-roc...8bfc&_ss=r

It includes a little fan (which is quite noisy, haha), and it works fine just by using the pins on the board.

But it goes at full blast all the time. I was wondering if you guys could help me figure out a way to have a voltage control setup tied to CPU temp?

I remember seeing something for the RPi with Python, but I can't seem to find it.

any help is appreciated.
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#2
(09-19-2020, 07:18 PM)idillicah Wrote: Hello!

I have this case: https://kksb-cases.com/products/kksb-roc...8bfc&_ss=r

It includes a little fan (which is quite noisy, haha), and it works fine just by using the pins on the board.

But it goes at full blast all the time. I was wondering if you guys could help me figure out a way to have a voltage control setup tied to CPU temp?

I remember seeing something for the RPi with Python, but I can't seem to find it.

any help is appreciated.

I've not tried these yet because I can't get my fan to respond at all (which GPIO pins did you use?) but they seem well-worth a look.

https://github.com/Matei-Ciobotaru/Tempe...ol-Scripts

https://github.com/Matei-Ciobotaru/Rock64-R64.GPIO
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#3
https://github.com/mrfixit2001/Rock64-R64.GPIO

https://github.com/tuxd3v/ats
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#4
(06-22-2021, 07:00 AM)Mrfixit2001 Wrote: https://github.com/mrfixit2001/Rock64-R64.GPIO

https://github.com/tuxd3v/ats

I use ats to control the case fan in my RockPro64, it works fine. I've also just manually set the fan speed with e.g.
   echo 50 > /sys/devices/platform/pwm-fan/hwmon/hwmon3/pwm1

(You must be root of course)

edit: just realized this thread is about Rock64, not RockPro64...
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#5
If you don't want to spend CPU cycles soft-PWMing in userspace, you can use a microcontroller and gpio-fan in the dts to get the same thing done with no userspace daemons or python scripts.

Occasional Linux Kernel Contributor, Avid Wiki Updater, Ask Me About Quartz64
Open Hardware Quartz64 Model A TOSLink Adapter
Pi-bus GPIO Extender For ROCKPro64 And Quartz64 Model A
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