Why M107 won't shut the fan off?

Obviously not a showstopper but i am playing around with g-godes and wanting to set up custom buttoms in Pronterface.
M107 should turn off extruder fan but dosen't. Any advice?
Thanks,
Peter

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PedroB
Obviously not a showstopper but i am playing around with g-godes and wanting to set up custom buttoms in Pronterface.
M107 should turn off extruder fan but dosen't. Any advice?
Thanks,
Peter

You should never really turn of the Extruder fan but just to try a trouble shoot this how is it connected to the Ramps (I Am assuming now that it is ramps?)

I suspect you have it connected to the PSU Input so g-codes won't have any effect on it if that is so.

Doug

Thanks for responding Doug.

I'm not printing yet, just working my way through the setup and trying to absorb as much info as I can along the way. Consequntly I'm sitting around playing with (working on) the printer that is powered up with fan running. So I became curous about how I could independantly control it.
What is PSU? Power Supply Unit??
I've attached an image from the RepRap site that show where I connected the fan.
Regards,
Peter

Quote
PedroB
Obviously not a showstopper but i am playing around with g-godes and wanting to set up custom buttoms in Pronterface.
M107 should turn off extruder fan but dosen't. Any advice?
Thanks,
Peter

M107 will turn off the print fan on D9.
The extruder fan as shown in your image is 12v always on.

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SteveRoy

Quote
PedroB
Obviously not a showstopper but i am playing around with g-godes and wanting to set up custom buttoms in Pronterface.
M107 should turn off extruder fan but dosen't. Any advice?
Thanks,
Peter

M107 will turn off the print fan on D9.
The extruder fan as shown in your image is 12v always on.

Beat me to it

Doug

SteveRoy is correct but understand that if you make your extruder fan controllable and accidently print with it off you risk ruining your hotend and possibly even the extruder.

my extruder has two fans the extruder fan and the extrusion melt fan under the nozzle... i want to turn that off because my print room is 10 degrees. m107 works given where the extrusion fan is plugged in.

Edited 1 time(s). Last edit at 03/08/2015 05:32AM by skynetprinter.

I had a similar problem and solved it by using M106 S0 instead of M107. Hope it helps.

Can you turn on your fan and control it with M106 ?

And which firmware are you currently using !