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dual extruder fan,s on GT2560

Posted: Mon Dec 07, 2015 12:07 am
by Ovdl
Hi there,

i,m running a geetech prusa I3.
Runs great,but want more cooling.
Now running a 40mm fan on the pwm.
Can i set two of them paralell on the pwm port?
One in front and one from the back blowing fresh air.
board is a GT2560.

thanks!!

Re: dual extruder fan,s on GT2560

Posted: Mon Dec 07, 2015 4:31 pm
by Mark
If you use 12V for power and fan, then I think it will work, and remember to plug the jumper cap here, it will turn the PWM fan on all the time, which is useful to the print job.
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QQ截图20151207163039.jpg (297.85 KiB) Viewed 6161 times

Re: dual extruder fan,s on GT2560

Posted: Tue Dec 08, 2015 4:29 am
by Ovdl
ok,
thanks.
i will try.
two of those fans will take probably 2x0.06A=0.12A from the pwm output at 12v.
but i still want to control them by pwm/gcode.
increase fan rpm by smaller prints,decrease fan rpm by infill or bigger prints.
controlled by slic3r works perfect by me.