Radxa 5B+ POE HAT fan

[ASim M]

I have an Radxa 5B+ that are powered through POE HAT. The problem is that POE HAT fan does not work at all. I have to identical machines, same issue on both of them.

I have installed Armbian minimal Bookworm on both, on nvme ssd.

[Werner]

According to the schematic it seems like pwm is used for that. That would need to be enabled as device tree overlay.

https://dl.radxa.com/accessories/25w-poe/radxa_25w_poe_plus_hat_v1.2_schematic.pdf

 

Not sure if there is further/DIY programming necessary to make it work.

[Werner]

https://github.com/lanefu/fan-control-rock5b-poe