Partcooling Fans on IDEX both 100% all time
Hi guys, I have the issue that my printer is completly new assembled and my part cooling fans are running 100% all time. I triple checked the wires of my sanyos, brown goes to the white cable and the whitecable goes to PA0 on the EBB42.
It is the same behaviour on both Fans. I also checked the connection with a multimeter. What am I doing wrong?
I already found this link with same issue? And the guy tells us that the Octopus is broken?
https://discord.com/channels/582187371529764864/1383222854891474974:sob:
21 Replies
What happens when you try to change the speed in mainsail?
Just nothing 🙁
in mainsail it is at 0% on fresh start. I ramp it up to 40% f.e. wait 5 sec and move the slider back to 0% and still full speed on fans.
Put it to 100% just to be confirm, but yeah sounds like wire or port is wrong
I did, I also exchanged the octopus now with the one from
My old ratrig vcore 3.1, same issue. Guess the board itself seems to be ok
I check the wire with multimeter, it has contact
Is the pwm wire going to the octopus, or tool board?
Toolboard PA0
I can do a debug line to the octopus, what pin should I use in this case?
do you know what this jumper can do? can't find anything about it, maybe some "feature" for PWM?
drop your debug.zip in here maybe we can double-check what pin is being called out
hope you can find something
in the meantime, I can try to do a wire to this port for one of the fans
blue one
yep, you could try that. Could help narrow down if you're using the right wire off the fan.
fan_part_cooling_pin=PA0 looks right
Does your fan have 3 or 4 wires coming off it?4 wires
black, red, brown, yellow
brown is meant to be the PWM as of the documentation
I made this change in printer.cfg now for the blue wire from the screenshot above
the ratos.cfg looks like this:
fan is connected to PA8 I tested it with this:
and this
same issue
no response to changing the speed in the dashboard hm
try swapping yellow and brown? They're mislabeled sometimes
I did the 100% test and then back to 0
Can I damage something when switching brown/yellow?
before doing this, Could I also test, if the brown wire sends the tachosignal? if so, how can I check this?
Only way I can think of would be an oscilloscope
There is something that can be damaged, but I can't remember if its only if you try to change it while power is applied, or if you mix up tacho and power/ground. Wish I could help better on this
thank you so far! I wrote an email to ratrig, maybe someone can help me from them
@NicedevilQT How did you end up resolving this? I'm experiencing the same thing
The connection was the issue at the end. My multimeter told me other but I i just removed the molex microfit connection and crimped my own jst cable to cable connection on the 2 fans and this worked straight on first try.
I hate to say this... But ratrig did a very bad job making the user crimping the cables. That's nonsense because you end up doing a lot of shit and for miracle you don't get magic smoke... Then the end user will not be able to say that's a good machine because of ratrig building policy.