[DISCUSSION] Fans/Heatsinks/CPU Cooling Mods

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User avatar
cyphergenetics
Posts: 17
Joined: Mon May 30, 2016 2:58 am

Sat Jun 04, 2016 12:05 am

LatteROFLCOPTER wrote:OK so I decided to install some mini heatsinks to see what happens.
While the LP has been stable for me, I'm not too happy with the high temps especially since it hasn't been hot weather.

The 'shield' (Really a Heat Spreader) will conduct the heat from the processor and spread it out over a larger surface area which is a good thing. Because of this, I decided to install the mini heatsinks directly on to the spreader.

I have some copper ones (commonly used on RPi) and an aluminium one, now as we all know copper is a much better conductor for heat. I still decided to use the aluminium one as it should at the very least help (I used one in my router which was overheating, and ever since there hasn't been any issues).

I also have the LP sitting on a small fan which is powered by USB (it's very quiet).
Best is to delid that metal case tho. Afaik, cpu -> timm paste -> metal casing -> heat sink , just suck at thermal heat transfers. Going through 3 stuffs just to spread. If you ever mess with or built your own desktop, you'd know why..

User avatar
scyto
Posts: 1
Joined: Sat Jun 04, 2016 3:51 am

Sat Jun 04, 2016 3:59 am

Sweet, i wish i had those kind of skills. Any thought to making a ~7" one that can house the screen too? :-)

User avatar
ESTIMULO
Posts: 1
Joined: Sat Jun 04, 2016 4:28 pm

Sat Jun 04, 2016 4:34 pm

yes, it is beautiful,
i am also looking for a case where can fit the 7" touch screen.

User avatar
acasta
Posts: 23
Joined: Sun May 15, 2016 9:43 pm

Sun Jun 05, 2016 3:57 pm

Hi!
I received my new heat sinks yesterday, and just tinkered around with them:

For reference: 40x32mm heat sink, small raspi-heat sink, 5V fan.

The fan didn't arrive yet, but as for now, the setup looks promising.

Attached to this post, you'll find photos of my "planned" setup, as I didn't use the sticky pads of the heat sinks yet. My idea is to construct a small enclosure and have the fan mounted sideways, for it to blow simultaneously over the top and bottom heat sinks.

I'm still thinking, whether it's wise to remove the RF-shielding. This could make for better thermal conductivity, but, as I read in some post, there's a heat spreading pad between CPU and the tin shield, so this shouldn't be much of an issue.

If you've got some comments or suggestions, I'd be glad to hear them!


-ac


EDIT: For optimized heat sink placement, take a look at these photos.
Attachments
LPtop.png
LPtop.png (163.96 KiB) Viewed 6678 times
LPbottom.png
LPbottom.png (141.65 KiB) Viewed 6678 times

User avatar
tony359
Posts: 132
Joined: Tue May 24, 2016 5:52 pm

Sun Jun 05, 2016 5:02 pm

thanks for the link. I have been looking for a 40x30, that's why I couldn't find it! I can find some 40x32 on Ebay UK as well - from China.

I still feel that a fan is really needed if any result is expected. I'm waiting for a 30x30 heatsink with fan which hopefully will help out! :)

User avatar
acasta
Posts: 23
Joined: Sun May 15, 2016 9:43 pm

Sun Jun 05, 2016 6:28 pm

to me, the fan looks fine. should be no problem. just keep in mind, that the fan pulls ~0.2A, maybe even more when starting up. you should make sure to have a sufficient power supply and a good usb cable.

edit: i can't say 100% for sure, that the connector will fit. but if you have an exacto knife at hand, you are prepared for even the worst mismatches. ;-)


-ac

User avatar
Bruno
Posts: 20
Joined: Sat May 21, 2016 1:55 am

Mon Jun 06, 2016 9:13 pm

Here's mine, i fixed an old celeron cooler with thermal adhesive tape and cut the original acrylic box to fit the cooler.
Attachments
lpcooler.jpg
lpcooler.jpg (227.51 KiB) Viewed 6656 times
Last edited by Bruno on Thu Aug 11, 2016 5:52 am, edited 1 time in total.

User avatar
fgaine
Posts: 12
Joined: Sat May 21, 2016 11:30 am

Wed Jun 08, 2016 8:09 am

seipekm wrote:This is my LattePanda Case
http://www.thingiverse.com/thing:1605660
Hi

I have it in my basket and was almost buying a printout of it from Thingiverse. Then I looked at your links for the pins and heatsink and they are all in German. Can you point me to a link where I could purchase those parts in the UK?

User avatar
fgaine
Posts: 12
Joined: Sat May 21, 2016 11:30 am

Sat Jun 11, 2016 12:10 pm

I bought a 40mm silent case fan for my LP. I plugged it into the 1st 3-pin 5v connector and the fan just about feebly vibrated. On the second connector, no reaction at all from the fan. Which connector should I be using, what is wrong?

User avatar
tony359
Posts: 132
Joined: Tue May 24, 2016 5:52 pm

Sat Jun 11, 2016 1:15 pm

the fan probably requires too much current to start spinning. Try spinning it by hand, does it keep spinning? If not, what's the wattage/current the fan is requiring?
If it's not working, you may have to get the power from the power supply.

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