12v Fan for hot end..

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Bobbystone
Posts: 23
Joined: Wed Feb 18, 2015 5:28 am

12v Fan for hot end..

Post by Bobbystone » Fri Oct 13, 2017 7:28 pm

Hey, How do I use the OPT fan circuits on the Felix 3.0 board to power a 12v extruder fan?

Thanks

Dreide
Posts: 176
Joined: Sun Sep 29, 2013 12:32 am
Location: Lausanne, Switzerland

Post by Dreide » Sat Oct 14, 2017 9:28 am

Bobbystone wrote:Hey, How do I use the OPT fan circuits on the Felix 3.0 board to power a 12v extruder fan?
Not sure if I understand the question. Just connect it to OPT instead of MAIN (like shown in the assembly manual for the dual extruder). See also http://www.felixprinters.com/forum/view ... 6825#p6825.

Bobbystone
Posts: 23
Joined: Wed Feb 18, 2015 5:28 am

Post by Bobbystone » Sat Oct 14, 2017 7:57 pm

I have it hooked up to the opt output. Doesn’t seem to be any voltage

Dreide
Posts: 176
Joined: Sun Sep 29, 2013 12:32 am
Location: Lausanne, Switzerland

Post by Dreide » Sat Oct 14, 2017 11:04 pm

Bobbystone wrote:I have it hooked up to the opt output. Doesn’t seem to be any voltage
Provided the fan is working, and I guess it does, the problem is probably a faulty output transistor. See also http://www.felixprinters.com/forum/view ... =11&t=1652.

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