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Blower fan changing speeds for split of a second  

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Land3r
(@land3r)
New Member
Blower fan changing speeds for split of a second

Hello All,

I have changed the firmware of the printer to 3.6 and since than (might be from before but I just realized), the blower fan peeks speed for split of a second every 3-4 seconds.

anyone have a clue where this is coming from ? Changed the fan back to the original prusa one, same situation.

Posted : 19/03/2019 12:23 pm
Land3r
(@land3r)
New Member
Topic starter answered:
Re: Blower fan changing speeds for split of a second

it is something with the electronic board as the led light above the fan socket is blinking even when the fan is unplugged...

Posted : 19/03/2019 3:12 pm
vintagepc
(@vintagepc)
Member
Re: Blower fan changing speeds for split of a second

this is normal and a known result of the PWM changes to the firmware. I'm not sure if it's a bug or intended as such because the PWM changes introduce challenges in detecting the fan RPM.

Posted : 19/03/2019 3:40 pm
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