Pi PoE HAT fan control

[michaelsage]

@SarumaN

Please check that the following line of code is present in config.txt .

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dtoverlay=rpi-poe

and append these lines at the end of config.txt

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dtparam=poe_fan_temp0=10000,poe_fan_temp0_hyst=1000
dtparam=poe_fan_temp1=55000,poe_fan_temp1_hyst=5000
dtparam=poe_fan_temp2=60000,poe_fan_temp2_hyst=5000
dtparam=poe_fan_temp3=65000,poe_fan_temp3_hyst=5000

My fan is now constantly on but at low speed and will speed up when needed (CPU load up → temp up → fan RPM up). A constantly switching fan is not preferred over one that is constantly on (at low speed).

This post has fixed my PoE fan issue, thank you to everyone. In the end I learned that you need the dtoverlay, and 4 poe_fan_temp entries!