Cristian I
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
It will come, "Soon" as they always say😂
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
Only what is available on this Discord
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
no problem
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
That is the forth wire, it has a + and - wire, a PWM signal wire and a tachometer wire
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
By adding basically a switch to the ground wire, this can no longer happen as heater port are automatically switched off when Klipper shuts down
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
The 4028 is different, it uses and need a PWM wire and signal to control the speed. That is the reason why it runs at 100% until Klipper is booted, it looses PWM signal. As a server fan, it's default state is to run at 100% until PWM signal is restored
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
The ground need to be connected to a heater port and the config changed, as described in the link
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
so you removed the stock fan and replaced it with this one? use the same plug then
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
I assume that you are referring to the 4028 part colling fan, needs a different setup so that it does not run at 100%
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
The ground wire is pulsed, that is how the speed it controlled
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
Do you have a different setup than from the standard VC4 cooling setup? The stock setup is more than capable to cool the drivers without the need to add aditional fans
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
Yeah, I though that that klipper removed multipins at first, until I removed it from controller fan
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
but your config from above should work as you intend it to
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
Fan works with multi pin, but it does not work for controller fan, which you need
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
Yes, that was the following solution
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
It seems that controller fan does not like multipins
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
Ugh, need to research what the correct setup for it was, give me a few minutes
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
I changed it, try it now
50 replies
RRCRat Rig Community [Unofficial]
•Created by heedaf on 3/29/2025 in #ratos-support
How to Turn On a Fan with the Steppers
Add this to your printer.cfg and see if it works
[multi_pin tmc_fans]
pins: PD12, PA8
[controller_fan controller_fan]
pin= multi_pin:tmc_fans
50 replies