1 Topic by user64x

  • user64x
  • Member
  • Offline
  • Registered: 2013-12-27
  • Posts: 19

Topic: Extruder motor fan still running even when power pulled off

Not a big thing, slight annoyance.  I noticed the default extruder motor fan runs (at much slower RPM) when the power is off (as in power plug pulled out).  I'm sure it is running off of USB power.

Any idea how to turn it off when the power is off?  I don't turn off my computer so that little fan is running 24/7.  Just worried about longevity of the fan.

2 Reply by elmoret

  • elmoret
  • Filastruder
  • Offline
  • Registered: 2012-10-11
  • Posts: 6,048

Re: Extruder motor fan still running even when power pulled off

Old news, power is back feeding through the cheap 7805 to the 12v rail. Not gonna hurt anything.

Filastruder - the robust, inexpensive filament extruder
E3Dv6 All Metal Hotend - the premier 3D printing hotend