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dmg244
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Joined: Sun Jul 18, 2021 11:42 am

RB493: Fan speed bug?

Sun Jul 18, 2021 12:04 pm

Due to the heat, wi-fi stopped working on RB493 and I decided to add a fan.
But after connection, the speed from the fan is not read:
Image
After a few experiments and a reboot, I saw that the voltage line was added (which should not be, as I understand it, for the RB493 model without letters).
But it does not display voltage, it's show something like raw fan-speed:
In normal fan operation it's changes like 12-11V:
Image
When I'm try to slow fan speed by my finger it's show down voltage:
Image
When I'm stop fan by my finger it's show 0V:
Image
When disconnect FAN it's show:
Image
I take another RB493 but can't reproduce that and only have "0 RPM" again without "voltage" indicator:
Image
It's is firmware bug or my mistake? I need to read fan-speed via SNMP to control FAN failure on RB493 devices.

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