[DISCUSSION] Fans/Heatsinks/CPU Cooling Mods

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

Fri Aug 19, 2016 5:44 pm

I made this mod on my board, i replace that pink compound with a small cooper plate, the thermal compound i had here isn't that good, i waiting for a new and better one, after that i replace and test again, with this one running prime95 for a hour the processor gets 70 with around 30 Celsius on ambient.
Last edited by Bruno on Sun Feb 04, 2018 8:33 am, edited 1 time in total.

User avatar
up2u
Posts: 2
Joined: Sat Aug 20, 2016 6:39 am

Sat Aug 20, 2016 6:59 am

I took the bottom metal cover off & applied some thermal cream & then I reattached the cover & stuck on 6 pI black heat sinks.

I removed the top cover and stuck 1 heat sink on each of the 3 chips.

Take care with all this as the guys at LP may have used the metal covers for RF shielding, but I am have no issue with RF.
The next thing is to somehow bond better copper heat sinks to the chips & have active cooling fans.
Here in Thailand in a Aircon room set at 24c, I am reading 44.5c on both front & back chips after the work above.

I think a fan powered from a USB hub will be required as the CPU Will Throttle back with the heat.
If the PCB is laying flat on a table the underside will get much hotter.
Cheers, Ed

User avatar
DVS_Dee
Posts: 10
Joined: Mon Apr 25, 2016 8:14 pm

Sun Aug 21, 2016 12:00 am

Case and heatsinks done, just need to add the fans.

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User avatar
up2u
Posts: 2
Joined: Sat Aug 20, 2016 6:39 am

Sun Aug 21, 2016 1:06 am

Looking really good!
How did you attach?
Regards,
Ed

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DVS_Dee
Posts: 10
Joined: Mon Apr 25, 2016 8:14 pm

Sun Aug 21, 2016 2:48 pm

I attached the heat sinks using Akasa thermal adhesive tape:

https://www.amazon.co.uk/akasa-AK-TT12- ... B001GIM9V8

User avatar
Boring
Posts: 88
Joined: Sat Apr 16, 2016 7:14 pm

Mon Aug 22, 2016 6:58 pm

Yesterday I tested my passive cooling solution.

After running Prim95 for one hour temp was about 70C with CPU speed at 1600MHz

I removed the metal shield from the CPU and PMIC. the CPU is cooled with a copper plate with heat pipe. The PMIC is cooled with an aluminium heatsink. I had to modify the heatsink a little bit, because of the high infrastructure next to the PMIC and CPU.

but I'm quite happy with the performance of the cooling system.

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

Thu Aug 25, 2016 6:23 am

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User avatar
lezou
Posts: 7
Joined: Sun Jun 26, 2016 6:53 pm

Fri Aug 26, 2016 6:14 am

shadow_empire wrote:I installed such a fan on my LattePanda but it is running on max speed and is really loud.
https://world.taobao.com/item/380442806 ... o=pcqq.c2c
Is it possible to change the speed of the fan?
I have one too, but the connector is way too small to fit the CN2 pins....
how did you modify yours ?

User avatar
lezou
Posts: 7
Joined: Sun Jun 26, 2016 6:53 pm

Fri Aug 26, 2016 6:15 am

LattePanda wrote:check out the resources list, we have listed an ideal fan/heatsink solution.
and where is the ressource list ?
I've bveen looking everywhere for it and can't find it.

Thank you !

Nevermind, I foundit by digging in your posts :)

viewtopic.php?f=6&t=275

User avatar
LattePanda
Site Admin
Posts: 2662
Joined: Wed Jan 20, 2016 9:09 am

Fri Aug 26, 2016 6:39 am

FYI these are now available via DFRobot:
http://www.dfrobot.com/index.php?route= ... 7_kEK11Zfc
Enjoy Tinkering with LattePanda ! :lol:

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