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230 posts

Master Geek
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Topic # 205679 23-Nov-2016 08:44
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G'day.

For some Raspberry Pi cases I bought, I want to pick up a handful of 30mm, 3.3 or 5v, brushless, quiet fans, that preferably are suitable for horizontal mounting (so hopefully avoiding bearing types that are loud and rapidly degrade in that position, e.g. sleeve bearings), in NZ? Already having the correct wiring and connectors would be a plus!

I plan to overclock the Pi 3's I'll install within the cases and have them running CPU intensive tasks 24/7, thus my wanting active cooling (I figure it was either that or graft comparatively giant PC heat sinks onto the Pi's), in addition to regular Pi-sized heat sinks being fitted.

But alas my googling has come to naught this morning, so I ask you fine people for help :-) TIA!




"The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us."

 

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62 posts

Master Geek
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  Reply # 1676118 23-Nov-2016 14:40
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https://www.jaycar.co.nz/5vdc-30mm-thin-2-wire-fan/p/YX2500




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Master Geek
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  Reply # 1676742 24-Nov-2016 15:09
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pipe60:

https://www.jaycar.co.nz/5vdc-30mm-thin-2-wire-fan/p/YX2500



Cheers! :-)




"The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us."

 

- Calvin and Hobbes (Bill Watterson)

 
 
 
 


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Ultimate Geek
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  Reply # 1677539 25-Nov-2016 17:16
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Just a thought, rotate the rPi to better accommodate the fan? 







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Master Geek
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  Reply # 1677678 25-Nov-2016 22:05
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pbgben:

Just a thought, rotate the rPi to better accommodate the fan? 



While there are cases with a vertical fan mount, my current case would be unstable on it's side, due to the weight of the HDMI and USB cables. I could clamp it into position, but I've already tried running this Pi disconnected from any physical connection (except power, of course, heh), and on it's side for a while, to see if the fan ran more quietly. There was only a very minor decrease in fan volume. So such a measure would be wasted :-(

Sad to say my current fan is just cheap rubbish, obviously bundled in with this case for no other reason than to increase perceived value by customers. It wouldn't be so bad if only 30mm wasn't such an uncommon fan size. For my next Pi, I have ordered one of the rarer 40mm fan mount Pi cases, and while decent quiet 5v 40mm fans are uncommon, they're not super rare like 30mm :-)




"The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us."

 

- Calvin and Hobbes (Bill Watterson)

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  Reply # 1677679 25-Nov-2016 22:08
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I got rid of all thermal throttling on my pi3 with some ram heatsink on the main chip.

 

Without it was constantly having the thermometer icon appearing even in free air.





Richard rich.ms



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Master Geek
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  Reply # 1677683 25-Nov-2016 22:20
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richms:

I got rid of all thermal throttling on my pi3 with some ram heatsink on the main chip.


Without it was constantly having the thermometer icon appearing even in free air.



How oversize was that heat sink? Got any pics to share? :-)

I have found [url=https://www.adafruit.com/products/3082] which is the right size and much bigger than anything I've tried before, and am tempted to make them and an open air case like [url=http://c4labs.net/products/rebel-for-raspberry-pi-2-b-and-a] my attempt at a totally silent overclocked Pi for my bedroom, to game on (and still run BOINC during gaming downtime) in there.

The next step of course is to try grafting a larger ex-PC heatsink onto the Pi. But I'd rather try and keep that planned Pi a wee bit more slimline, if possible.




"The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us."

 

- Calvin and Hobbes (Bill Watterson)

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  Reply # 1677685 25-Nov-2016 22:43
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That adafruit one looks to be the exact same one. Mine came in a larger pack aimed at people with the desire to cool their ram on a video card.

 

I did try some shorter copper coloured ones on a previous pi that was not enough to run retropie or play a youtube without throttling, the bigger ones will do its poor attempt at youtube playback in chromium all day without throttling. Still plays 1080 like crap tho.





Richard rich.ms

neb

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  Reply # 1678452 27-Nov-2016 18:29
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Baboon:

I got rid of all thermal throttling on my pi3 with some ram heatsink on the main chip.

 

 

You could also go with this which, while a bit pricey, should solve your heatsinking issues. Just a pity it's so pricey...



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Master Geek
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  Reply # 1678454 27-Nov-2016 18:40
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neb:
Baboon:

I got rid of all thermal throttling on my pi3 with some ram heatsink on the main chip.



You could also go with this which, while a bit pricey, should solve your heatsinking issues. Just a pity it's so pricey...


The Flirc case is similar, if less feature packed. But I prefer cheap solutions, for a cheap device. Otherwise it feels like I'm defeating the point, a bit :-)

No doubt the case is some quality kit, though. But for that price I could get a Pi Zero kit shipped to me, and have even more fun.




"The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us."

 

- Calvin and Hobbes (Bill Watterson)

neb

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  Reply # 1678593 28-Nov-2016 02:27
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neb: You could also go with this which, while a bit pricey, should solve your heatsinking issues. Just a pity it's so pricey...

 

 

Slightly less comprehensive cooling but also much cheaper is the Flirc heatsink case. See assorted online reviews for its performance.

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  Reply # 1679543 29-Nov-2016 15:14
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I have quite a number of heatsinks with integrated horisontal fans from laptops - different sizes. Fans could be dismantled from the copper/aluminium heatsinks of course. in Auckland




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Master Geek
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  Reply # 1679621 29-Nov-2016 17:17
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RUKI:

I have quite a number of heatsinks with integrated horisontal fans from laptops - different sizes. Fans could be dismantled from the copper/aluminium heatsinks of course. in Auckland



30mm fans?




"The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us."

 

- Calvin and Hobbes (Bill Watterson)

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  Reply # 1680338 30-Nov-2016 22:18
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From memory had 3 small ones. Checked tonight - found 2 out of 3 (third one was 30mm, voltage - 12v or 5v can't remember)

 

Those pictured - 35mm unmarked voltage - works from 5V and another one is 30mm 12V (Toshiba):

 


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  Reply # 1680719 1-Dec-2016 14:28
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I have six 40 mm brushless fans if anyone is interested in buying some.




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Master Geek
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  Reply # 1681014 2-Dec-2016 07:49
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RUKI:

From memory had 3 small ones. Checked tonight - found 2 out of 3 (third one was 30mm, voltage - 12v or 5v can't remember)


Those pictured - 35mm unmarked voltage - works from 5V and another one is 30mm 12V (Toshiba):




The fan on the right is the perfect size, but I suspect that's the 12v one? If it is the 5v one (or if you test it on 5v and find it still spins), then I'm certainly interested. I live in Tauranga, myself.

Regardless, I'm appreciative of you looking into your spare parts :-)




"The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us."

 

- Calvin and Hobbes (Bill Watterson)

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