Add fan to Hc2

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Add fan to Hc2

Post by mrperfekotne »

How do I connect a fan to my hc2 when there is no connection to it?

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Re: Add fan to Hc2

Post by mad_ady »

Either use a 5V usb fan (always on), or a 5V fan (always on) that you solder to 5V/GND test points on the motherboard. You can get GND from the uart port, but I think it exposes only 1.8/3.3V for power there. You may need to check the schematics for other 5V pins.

I doubt there is any pwm pin exposed or gpio (it would a transistor any way)

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Re: Add fan to Hc2

Post by mrperfekotne »

How do I get 5v out of the USB port, is there an adapter?

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Re: Add fan to Hc2

Post by mad_ady »

You cut open the wires coming from the usb plug. They're color coded. 5V is red, gnd is black I think. It should give you 5V 0.5A.
Time to sacrifice a frayed cable... :)

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Re: Add fan to Hc2

Post by mrperfekotne »

The reason I ask is that I have put my hc2 in a slightly closed place where I have bent an alu plate that keeps them :) But think they may need cooling there :)
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Re: Add fan to Hc2

Post by mrperfekotne »

I have made a similar setup for my mother (For inspiration)
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Re: Add fan to Hc2

Post by mad_ady »

I'm sure a fan never hurts. Especially if you can't hear it.

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Re: Add fan to Hc2

Post by mrperfekotne »

I have a noctua on my cloudshell2 which is in the living room and after I've lowered the volt I can not hear it in any way :) But I change Cloudshell 2 now because of the "S.M.A.R.T" problem :)

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Re: Add fan to Hc2

Post by trohn_javolta »

Hi, I also consider adding a fan to my hc2 but I don't have a fitting mount for it. Any ideas how I could place a fan like this one?
https://www.amazon.de/AC-Infinity-MULTI ... 00G059G86/
or
https://www.amazon.de/AC-Infinity-MULTI ... 00MWH4FL4/

Or use such a blower fan, place it on top of the cover (cut out part of the cover+ holes for fan) and let the fan blow the hot air outwards of my tv shelf, where my hc2 sits.
I'm no cooling expert...do you guys think that would help lower the temp?

Edit: On second thought that might not be very effective. I'd have to place a fan under the pcb somehow I guess..but there's too little place.
Isn't there just the aluminium frame for sale? :D I don't plan on buying a second hc2.

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Re: Add fan to Hc2

Post by trohn_javolta »

I now ordered this one: https://www.amazon.de/gp/product/B009CNR0I6/
I'll just need to sand down the side of the metal plate a bit and it should fit underneath the hc2 (metal plate up).
Lastly I'll just need some rubber feet or sth. to lift everything up so the fans can draw air and done.

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Re: Add fan to Hc2

Post by mrperfekotne »

trohn_javolta i have made this solution now in alu with an NF-F12 nouctua fan see picture for inspiration :) It has the advantage that it is completely silent when it runs at 5 v because the fan is good quality :)
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Re: Add fan to Hc2

Post by mrperfekotne »

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.

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Re: Add fan to Hc2

Post by trohn_javolta »

mrperfekotne wrote:
Mon Dec 31, 2018 5:59 am
Looking nice, but does the fan help at all with cooling? The SoC is on the bottom, this is why I added the have the fans blowing upwards. I cut a bit of the ac infinity metal frame and sanded it down a bit:
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Re: Add fan to Hc2

Post by trohn_javolta »

Then added some feet and this is the endresult :) It's working good, can keep cpu temp at about 55 °C under load, depending on the fan speed I use, without fans I got up to 80 °C.
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Re: Add fan to Hc2

Post by mrperfekotne »

Yes it work fine as I have set the fan- The cpu the temperature has dropped the most important is there is a bit of air circulation and the air will also run on the underside of the cooling profile in the way i have set the fan :)

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Re: Add fan to Hc2

Post by Nuke »

My solution:
fan 140mm 1200rpm - very silent. but i will add usb power regulator to make it 0db
Image Image Image Image

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Re: Add fan to Hc2

Post by trohn_javolta »

Nuke wrote:
Tue Mar 12, 2019 8:51 pm
My solution:
fan 140mm 1200rpm - very silent. but i will add usb power regulator to make it 0db
Image Image Image Image
I thought turning a hdd upside down isn't a good idea.. did a quick research, turns out it doesn't seem to matter :)
But also for cosmetic reasons I didn't want to turn it upside down.
But my construction had its flaws. The vibration of the hdd transmitted noise to the ground since the hc2 wasn't lying completely flat an the fan frame. :D
Fixed that by loosing the screws that connect fans with frame a tiny bit, made sure the feet have same length and everything was aligned well + added felt gliders underneath the feet.
Now everything is nice and quiet again. ;)

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