Active cooling designs | Home Assistant | Page 1

random bridge Mar 10, 2023, 10:16 PM

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I’ll upload the files to thingiverse later and post the links here

vernal orbit Mar 10, 2023, 11:12 PM

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Cool thanks!

random bridge Mar 11, 2023, 3:36 AM

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https://www.thingiverse.com/thing:5903545

random bridge Mar 11, 2023, 3:51 AM

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It’s just the top and the fan module. I’m still using the stock yellow base.

random bridge Mar 11, 2023, 7:59 AM

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Maybe hold off on printing this, I need to revise the model for the fan module

random bridge Mar 11, 2023, 9:29 AM

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Ok I've fixed the issue with the fan module, it's good to go

vernal orbit Mar 11, 2023, 2:55 PM

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Do you have a real life photo of the setup all put together? I'm having a hard time picturing what the final product looks like.

vernal orbit Mar 11, 2023, 5:27 PM

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Also, all the Aliexpress items won't arrive in the US until May. So that's a non-starter.

random bridge Mar 13, 2023, 9:08 AM

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You can probably get them from Amazon too. It’ll just be more expensive.

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I’ll take a picture of mine and post a link

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https://imgur.com/a/cEXsVJx

keen ibex Apr 22, 2023, 8:49 PM

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What did you wind up wiring the fan to? Did you populate the built-in, unpopulated fan connector?

random bridge Apr 23, 2023, 9:35 AM

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i used the 5v and GND pins on the headers

random bridge Apr 23, 2023, 9:43 AM

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keen ibex What did you wind up wiring the fan to? Did you populate the built-in, unpopulat...

there's a fan connector?

long arch Apr 23, 2023, 4:48 PM

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I printed your case design lits (which is great, thank you) and I was wondering about a fan connector too because I already use the GPIO for a Z-Wave hat. I am looking at the PCB design in KiCad and found this https://imgur.com/a/86UuX7b . I tested with a multimeter and at least on my POE board this does indeed supply 12v. I'm thinking I will solder a header on there and see how it goes

random bridge Apr 23, 2023, 7:22 PM

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Ha well there you go

random bridge Apr 23, 2023, 7:49 PM

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So this is a proper 4-pin connector with sensing and speed control?

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Let me know how you get on. I’d love to have a fan that responds to actual cpu temp rather than just running at full speed the whole time. Even the little 5v one I have is fairly noisy.

long arch Apr 23, 2023, 9:08 PM

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It looks like pin 3 (sense) might not be not connected to anything but pin 4 (control) might be. I'll see what I can figure out and let you know

keen ibex Apr 24, 2023, 12:15 AM

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Yeah, I'm not sure if the speed control is wired up, but there's a spot of a header there -- it just doesn't' have a connector soldered to it.

long arch Apr 24, 2023, 2:47 AM

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Unfortunately from what I can tell there is no support for PWM fan control on the yellow board. There is a trace from GPIO 45 to one of the pads in the group right under the 4 fan pins, but from what I understand there would need to be a fan controller IC there for it to do anything which there is not. Apparently there are also a couple GPIO pins that could do PWM directly from the Pi (13, 18) but they are not exposed that way on the yellow board either

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It seems the fan support was just left half finished, the best you are going to get is uncontrolled 12v if you solder a header on there

#Active cooling designs