4 pin Part cooling Fan not turning on. | Rat Rig Community [Unofficial] | Page 1

pearl flare Jun 28, 2024, 10:31 PM

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I have a vcore 3.1 with eva 2.0 head. I uncommented the 4 pin fan header for the part cooling fan in both 25khz and 100hz but nothing. I have a manta m8p v1.1 and its connected to fan5

pulsar quarryBOT Jun 28, 2024, 10:31 PM

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vivid pilot Jun 28, 2024, 10:56 PM

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What is connected to fan5? Blue wire or red and black?

pearl flare Jul 2, 2024, 1:27 AM

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I have blue, white, red, black. I just swapped from a jst connector to a dupont thinking that was my mistake but it still isn't working.

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I extended the wires from the fan to the board and soldered the wires together instead of crimping.

spring scroll Jul 2, 2024, 2:33 AM

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pearl flare

That is the Manta 8 v1.0 board, you want the 1.1 https://os.ratrig.com/docs/boards/btt/manta-m8p-11

BIGTREETECH Manta M8P | RatOS

Wiring

pearl flare Jul 2, 2024, 3:48 AM

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thats how I have it and no action.

modern glade Jul 2, 2024, 4:06 PM

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pearl flare I have blue, white, red, black. I just swapped from a jst connector to a dupont ...

you probably swapped t he pwm and tach wires

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check you fans datasheet

pearl flare Jul 2, 2024, 10:26 PM

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does it know that I have it connected to the MCU not the toolhead since I run an ebb42?

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I have a back up 4028 2 pin incase I cant figure this out. Are four wire fans worth the hassle?

pearl flare Jul 2, 2024, 10:45 PM

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modern glade Jul 2, 2024, 10:59 PM

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pearl flare does it know that I have it connected to the MCU not the toolhead since I run an...

If you don't include the toolboard fan configs, then yes.

modern glade Jul 2, 2024, 10:59 PM

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pearl flare I have a back up 4028 2 pin incase I cant figure this out. Are four wire fans wo...

yes

modern glade Jul 2, 2024, 11:00 PM

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pearl flare

How do you know which is which here, you've used 2 identical wire colors.

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post your printer.cfg

pearl flare Jul 2, 2024, 11:25 PM

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I knew you would ask. I traced it back twice to confirm my order is correct. If you zoom in you see the two red wires and two black wires are different. Thats all I had. here is the connections

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darker slightly thinner red wire = Blue PWR, thinner solid black = white tach, thicker red wire = VIN, and the thicker black/red wire = Ground

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modern glade Jul 2, 2024, 11:33 PM

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pearl flare

aight that looks correct then

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Then prolly just a matter of config 🙂

pearl flare Jul 2, 2024, 11:35 PM

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this is the only change I have made in the config

runic otter Jul 2, 2024, 11:35 PM

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give us the full printer.cfg

pearl flare Jul 2, 2024, 11:36 PM

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I just download it from klipper?

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📎 printer.cfg

runic otter Jul 2, 2024, 11:47 PM

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move [include RatOS/4pin-fans/part-cooling-fan-25khz.cfg] to your user overrides section. Because when you use a toolboard it assumes that you will use the toolboard for the fan

pearl flare Jul 3, 2024, 12:03 AM

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like this?

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that worked!!!!!!

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wow this thing is powerful and loud!

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I should probably redo my PID calibration as this should change things up a bit. You guys are awesome!!! Thank you

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Could I ask for another question while I have the help. If you see on my last image I uncommented the max accel to decel because I was getting an error with that line commented but I was following ratrig documentation. I uncommented it for now until I fix it.

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