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Heatsink for P16 KS

PostPosted: Thu Jul 31, 2014 9:02 pm
by hex
I have 2 of the Kickstarter boards, and I'd like a better heatsink than the ones they came with. I see post-KS boards that appear to be fanless, and I assume the block was milled specifically for Parallella.

Where could I purchase two of these such "fanless" blocks at a reasonable price?

Re: Heatsink for P16 KS

PostPosted: Fri Aug 01, 2014 9:35 am
by 9600
hex wrote:I have 2 of the Kickstarter boards, and I'd like a better heatsink than the ones they came with. I see post-KS boards that appear to be fanless, and I assume the block was milled specifically for Parallella.


See the blog post on this.

Where could I purchase two of these such "fanless" blocks at a reasonable price?


I'm sure many of the usual component suppliers will have larger slab heatsinks that you could use, provided that you either mill/drill recesses in it to accommodate the taller capacitors, or de-solder those caps and replace with lower profile ones (this would of course invalidate any warranties).

Regards,

Andrew

Re: Heatsink for P16 KS

PostPosted: Fri Aug 01, 2014 3:51 pm
by AlbertoGP
If you look closely at the pictures of the new boards, you'll see that they replaced the capacitors with smaller ones and removed the reset button:
http://www.parallella.org/heatsink/

That's how they manage to put a flat heatsink, and why it will not work on a KS board unless you drill the heatsink as Andrew said.
That's what I did for my board, but such a thing is not commercially available.
Drilling the wells is not terribly difficult with the right tools, and if you simply drill a hole for each capacitor and the reset button it'll be even easier. You can see what I did and the problems I encountered in this thread: cooling and more memory?
You could get it done at some local workshop, or maybe ask someone you know. The main point is that you'll need heat conducting pads like Adapteva uses because the HDMI chip is a little bit taller than the ZINQ and Epiphany, so if you just put a flat heatsink on them with thermal grease as I did in my first attempt (golden heatsink) it'll not make good contact.