PART COOLING FAN not coming on ?

hey, new to klipper and printer seems to be working tho the part cooling fan does not come on at all, causing failed prints.
104 Replies
Rhys@R3D Airsoft Designs
octo 11
TheTik
TheTik5w ago
upload your actual printer.cfg and ratos.cfg please. Also a pic of the fan wiring at the octopus
Rhys@R3D Airsoft Designs
There is a config zip, does that not open?
Rhys@R3D Airsoft Designs
here ill get pics
TheTik
TheTik5w ago
ah, I somehow didn't notice that. Most don't zip them together. Something at work blew up, i'll be able to read in a bit
Rhys@R3D Airsoft Designs
its an old printer i got from a friend, havent been able to set it up because it required updates and that crashed the printer so had to hard restart.
Rhys@R3D Airsoft Designs
I also get this error on the klipper screen when printing
TheTik
TheTik5w ago
okay, in the blurriest pic I see a single blue wire, and right above it a red and black wire. Is that red/black the set going to the part cooling fan?
TheTik
TheTik5w ago
Also, have you tried manually setting the fan to 100% to see if it turns on?
No description
Rhys@R3D Airsoft Designs
Yeah I put the fan at 100 and nothing happens I’ll check the wires in a min, just popped out
TheTik
TheTik5w ago
kk. We need to make sure that the port that is supplying power to the fan is set to 12V, and that it is actually on
Rhys@R3D Airsoft Designs
The blue red and black leads to the 4028 fan yes With that connector I think the ports are correct, tho I’m not sure if the config is correct to read the fan And you mentioned about testing the power to the fan. Will I need to buy a volt meter ?
TheTik
TheTik5w ago
A multimeter would be very valuable for building a printer, yeah I can't quite see where the jumper is next to that red/black, can you verify that the jumper is on the middle set?
Rhys@R3D Airsoft Designs
Just found this in the shed haha
No description
TheTik
TheTik5w ago
score!
Rhys@R3D Airsoft Designs
They seem to be on the closest set of pins It’s a bit dusty haha
TheTik
TheTik5w ago
aha! That means it is 5V. Move it one set to the left
Rhys@R3D Airsoft Designs
Ok will try, just eating dinner. Thanks for the help, I’ll let you know
TheTik
TheTik5w ago
My fingers are crossed for ya
Rhys@R3D Airsoft Designs
Did you notice errors in the config for fan section?
TheTik
TheTik5w ago
no, that seems fine
Rhys@R3D Airsoft Designs
Set fan to 100, Removed the wire and tested the pins in the port
Rhys@R3D Airsoft Designs
This is fab spec
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blacksmithforlife
yeah you have it plugged in wrong. Those red/black wires need to be in an always on fan port https://os.ratrig.com/docs/guides/4028#pwm look at the image slightly further down that shows the wiring and make sure you set the jumper for that port to 12v otherwise you will fry your fan
Rhys@R3D Airsoft Designs
When I change the port, do I need to change the config to read the correct port?
blacksmithforlife
you can't assign those always on port in the config. As long as your blue wire is hooked up to the correct port, that is how you control the fan
Rhys@R3D Airsoft Designs
My motherboard fan is in that port ?
blacksmithforlife
think about it this way, the red and black wires of the fan can be hooked up directly to any 12v power supply. The blue wire (PWM) is what controls what turns the fan on/off and controls the speed (0-100%)
Rhys@R3D Airsoft Designs
This is how my current 4028 part cooling fan is connected
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TheTik
TheTik4w ago
oh, you changed it from what we were talkinga bout earlier?
Rhys@R3D Airsoft Designs
Yeah I tried This image above is my current wiring
TheTik
TheTik4w ago
Why didn't you just use the far right port for power AND ground? would have been simpler as you already had the right connector on the wires
Rhys@R3D Airsoft Designs
No this was how it was I mis identified the cable The one I thought it was is the heat sink fan Shall I remove the black cable from the 4028 fan and connect it with the red in the always on port ?
TheTik
TheTik4w ago
I would, yeah. Remove a variable from the equation while we get it working
Rhys@R3D Airsoft Designs
I think I fucked it up haha
blacksmithforlife
just depends on how you want to do it. Connecting the ground to the heater has the advantage of not having it turn 100% on boot
Rhys@R3D Airsoft Designs
Yeah well I might need a new motherboard ffs, good time for an upgrade tho haha
Rhys@R3D Airsoft Designs
So when testing with voltmeter I slipped and saw a spark now it’s fucked
TheTik
TheTik4w ago
shiiit 😦
Rhys@R3D Airsoft Designs
Haha It’s a octopus 11 so probs worth an upgrade anyway I got the printer for free so not to bothered Rat rig v3.1 400 Any recommendations for boards ?
TheTik
TheTik4w ago
i like my octopus 1.1, its pretty common for ratrigs
Rhys@R3D Airsoft Designs
alright
blacksmithforlife
yeah octopus is a good board
Rhys@R3D Airsoft Designs
@TheTik @blacksmithforlife 🇺🇸 I just got my new board, I’m wondering what to do for installation because the machine was already configured right, can I just swap everything over to the new board and turn it on, go through ratOS/local configure set up?? Or do I need to flash anything before I wire up the board, I have no idea haha
blacksmithforlife
you have to flash the board when in doubt, start over from the beginning of the electronics (just skip the pi install stuff)
Rhys@R3D Airsoft Designs
Almost finished working it up,
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Rhys@R3D Airsoft Designs
Shall I unplug everything to flash ?
Rhys@R3D Airsoft Designs
It says to flash the board then do ratOS/local config set up. But don’t tell me how to flash, I’ll look on YouTube to see if there is a guide
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blacksmithforlife
yes, just provide power to the board and USB connection to your PI
Rhys@R3D Airsoft Designs
I have this on the old SD, is this correct or shall I find a new version
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blacksmithforlife
follow the documentation and instructions - you aren't so far and it is going to cause you issues https://os.ratrig.com/docs/installation#preparing-your-control-board
Rhys@R3D Airsoft Designs
Ok, can I use the printer as the power supply or plug it in separately? Sorry if I’m asking dumb questions
blacksmithforlife
yeah, use the power supply you have that supplies 24v and hook it up to the new board
Rhys@R3D Airsoft Designs
Thanks How the fuck does it flash, the ratOS can’t see the board for automatic flash, and when I select as flash it says fails to fetch I’m such a noob With my other printers it’s simple haha
blacksmithforlife
you have two options - DFU or SD card follow the configurator and it is simple too to use DFU, you have to put it in that mode. Otherwise, download the firmware.bin and put it on the SD card
Rhys@R3D Airsoft Designs
Omg I think dfu flash is working It’s insane how you guys just know everything haha
blacksmithforlife
I have been hanging out here since like 2021 - so I have seen most issues already if you do a discord search, you will see the same issues come up again and again
Rhys@R3D Airsoft Designs
Seems like the pi isn’t connected to the internet?
blacksmithforlife
you have to reboot the board so it isn't in DFU mode that is part of the PI setup - https://os.ratrig.com/docs/installation#wifi-or-ethernet
Rhys@R3D Airsoft Designs
I thought it was connected because I’ve been using it before and just the board being changed. Surly the pi is connected otherwise I won’t be able to connect to the ratOS wizzard Yeah the pi screen seems to be connected
blacksmithforlife
the PI hosts its own hotspot if it can't connect to the internet so yes, you can still connect to it without internet
Rhys@R3D Airsoft Designs
Alright I’ll try to re do the pi config first then flash board
Rhys@R3D Airsoft Designs
@blacksmithforlife 🇺🇸 can I just ask what this jumper is in the middle of the board, my old board didn’t have the jumper on but this one came with it on?
TheTik
TheTik4w ago
thats J68, yeah?
Rhys@R3D Airsoft Designs
Let me check Yeah J68
TheTik
TheTik4w ago
No description
TheTik
TheTik4w ago
Maybe it connects local power to the pins that power the pi?
Oldschoolhippie
GitHub
BIGTREETECH-OCTOPUS-V1.0/BIGTREETECH_Octopus_EN_updated_0719.pdf at...
This is Octopus open source material. Contribute to bigtreetech/BIGTREETECH-OCTOPUS-V1.0 development by creating an account on GitHub.
Rhys@R3D Airsoft Designs
I have my pi powered with the car cigarette plug So I don’t need the jumper right My old board didn’t have it installed
Oldschoolhippie
I think you've got it wrong. This pin ensures that your board receives power from the Pi. Not the other way round. This is also stated in the documentation I have linked.
Rhys@R3D Airsoft Designs
It’s still loading haven’t read it yet
Oldschoolhippie
This makes it easier to flash the board. otherwise you would have to connect it to a power supply. once your power supply has been connected to the board, this jumper is no longer necessary. I would have liked to copy the text from the documentation, but it's a picture and was too much for me to write. 😂
Rhys@R3D Airsoft Designs
This is what I get with your link I don’t need it then
Oldschoolhippie
here you go:
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Rhys@R3D Airsoft Designs
Yeah thanks Now back to where this whole problem started haha Part cooling fan
TheTik
TheTik4w ago
you're braver than me, doing it all on mobile 😄
Rhys@R3D Airsoft Designs
I’ll ad the black to the connector haha
No description
Rhys@R3D Airsoft Designs
Oh my discord is on my phone, my pc in background Need to find a new connector, that one only has a red pin haha
TheTik
TheTik4w ago
Not a bad idea to have a bunch of those connectors and pins spare
Rhys@R3D Airsoft Designs
Yeah I got some somewhere Can’t find them might have to try and re use a pin
Rhys@R3D Airsoft Designs
I have a fan Loud and powerful, might need to slice at 50% haha
TheTik
TheTik4w ago
Woohoo! I slice at like, 30% for PLA But run your own tests
blacksmithforlife
be sure to mark which message is the answer to help future people searching for answers
Rhys@R3D Airsoft Designs
How do I do that, just need to mark the correct wiring diagram as the answer to my fan not working.
TheTik
TheTik4w ago
I think you do a green check mark react emoji
blacksmithforlife
No worries, I'll mark it for you
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