Downward fan won't start turning on its own
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If I set my downward fan to less then around 50% in my slicer in the gcode to start at the 2nd layer, it needs to be turned by hand to get it to start. Do I need a new fan or can I tweak the PWM freq???
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There is a setting to configure a fan to run at startup at 100% for some time to get those fans running first and then set it to the requested speed:
https://duet3d.dozuki.com/Wiki/Gcode#Section_M106_Fan_On
Extra Parameters :
Bnnn Blip time - fan will be run at full PWM for this number of seconds when started from standstill. Default is B0.1.
Try a longer time than 0.1 to test if that helps. -
Blip should help but you can also test other frequencies. Some fans don't seem to like to start with high frequency settings.
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@phaedrux Thx to both replies!
