So I’m trying to hook up two cooling fans for my KITTAZ w/ dual extruder, 24V PSU. I had spare 12V fans lying around so I figured I’d try to hook two of them in series. Should work in theory, right?
They’re Sunon fans, 12V/0.13A/1.6W. When I plugged them in and tried to run them, they won’t work. They “twitch” a little when I feed them power, as if they’re not getting enough juice to actually start running. They’re light loads so I’m not sure why they behave this way.
Against my better judgment I did try hooking one of them directly and it does run but only once I up the PWM to 244/255.
I’ll order another 24V fan and hook up two in parallel if I have to, but I’m wondering if there isn’t a way to make this approach work first. Is there something I need to modify in the firmware?
Note that I’m planning an upgrade to dual e3d’s soon so I do have to have two fans running off a single mosfet.