12v Fan for hot end..

Bobbystone · 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 · 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 · 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 · 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.