Balena OS + RasPi4 POE Hat - Fan Control Problem

Product support balenaOS
1

Hello all,

following problem, today came my POE Hat for the RasPi4.
So far it works, the fan starts and stops again.
However, I can not edit the config of the fan. On the SD card I have adjusted the config.txt under boot as follows:

PoE-Hat Lüftersteuerung

dtoverlay=rpi-poe

dtparam=poe_fan_temp0=10000,poe_fan_temp1_hyst=1000
dtparam=poe_fan_temp1=60000,poe_fan_temp2_hyst=5000
dtparam=poe_fan_temp2=65000,poe_fan_temp3_hyst=5000
dtparam=poe_fan_temp3=70000,poe_fan_temp3_hyst=5000

However, I have the feeling that the inputs are completely ignored.

is it actually possible to set these parameters in the dashboard under the variables?
So you would be more flexible in terms of customization.

Thanks

2

Hey @clipse welcome to the forum.

You can access the dtoverlay and dtparam configuration in the dashboard under ‘Device configuration’. Values added here get passed to the config.txt file automatically.

The option you’re looking for is “Define DT parameters for the default overlay.” and “Define DT overlays”. They may already have values, but you can add to them.

To get all the params in you’d have to input them like this:
"poe_fan_temp0=10000,poe_fan_temp1_hyst=1000","poe_fan_temp1=60000,poe_fan_temp2_hyst=5000","dtparam=poe_fan_temp2=65000,poe_fan_temp3_hyst=5000","dtparam=poe_fan_temp3=70000,poe_fan_temp3_hyst=5000"

4

Hello @clipse did you solve your issue with the reply from my colleague?

Let us know how we can help you more!