dual extruder fan,s on GT2560

[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!!

[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.

QQ截图20151207163039.jpg (297.85 KiB) Viewed 6156 times

[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.