Connecting fans to "OUT1" or "OUT2"

Exerqtor

I've got a two "larger" 2pin blower 24v/12w (dual ballbearing variant) fans inbound i plan to use as AUX print cooling fans.

Issue is however i'm running short on fan outputs on the Duet 3 Mini, so i was wondering if i could use "OUT2" to run both these?

Mr Yod

You mean in parallel?

The code should be:

M950 F{fan number} C"out2" Q25000						; create fan {fan number} on pin out2 and set its frequency
M106 P{fan number} S0 H-1 C"Heater controlled fans"		; set fan {fan number} value. Thermostatic control is turned off

where {fan number} is the number you prefer

Exerqtor

@Mr-Yod Yeah in parallel, I know how to structure the code but I was curious if it might be any drawbacks to running fans on any of those outputs since they're "earmarked" for heaters 😅 Should have worded myself better probably 🙈

Mr Yod

@Exerqtor
They are marked for heaters because they can output a much higher current than other output terminals.

AFAIK there aren't drawbacks whatsoever and in your case it's also desireable since those fans draw a lot of current.

The other solution would be to use an external relais with a standard fan output (of which you are running short)

jay_s_uk

@Exerqtor there's no issues running fans on heater outputs