MCU Temp controlled fan, config issue?
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So, I had an old discussion about this ( https://forum.duet3d.com/topic/4531/allow-me-to-introduce-project-full-metal-delta/14 ).
Now we've had a bit of a heat wave here, and I am starting to see 50-60C MCU temp when doing long prints, especially with ABS given bed temperature.
So, I thought i would wire this up. But, not really working. I have connected the fan per the enclosed screenshot, and i have sent
M106 P2 H100:101 T45:55 L0.3
But the fan seem to be "always full", despite reporting MCU temperature: min 32.5, current 34.1, max 36.2
If i ground the PWM wire, the fan stops. So, What may I be missing here? Fan jumper set for Vin.
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When using 4-wire fans you need to invert the PWM control signal, using parameter I1 in the M106 command.
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Oh.. Or rather DOH...
Thank you.
