On Wednesday 02 October 2019 11:20:16 Les Newell wrote: > Hi Gene, > > > But I'm still waiting on heat > > sinking hardware and a fan to cool my pi4 with. > > I'm not keen on the tiny fans used on Pi heatsinks and most Pi > heatsinks without fans are so small they don't do much. The other day > I found this Pi4 heatsink on eBay > <https://www.ebay.co.uk/itm/Aluminum-Alloy-Enclosure-Box-Radiating-Pla >te-Heatsink-For-Raspberry-Pi-4-Model-B/352761372442>. This is a UK > listing but the seller almost undoubtedly also ships to the US. > > The version without a fan should still be plenty big enough to keep > the Pi cool. I'll report back when it arrives. The Pi is for a > completely unrelated application. After seeing your struggles with a > Pi I think I'll stick with x86 based computers for LinuxCNC. > > Les > Which is the first kit I bought for the pi4. But the padding materials protective films could not be removed without trashing the material, so I ordered some more, but all I could find was startech and it would have taken ten sheets of that to match the thickness of whats supplied. In the meantime I'd measured the oem stuff and found it to be somewhere north of 1.8mm thick. So I took 1.8 off the legs, then 1.5 more off the thicker section above the mini hdmi sockets. Then I found I'd need to plow a trench above the audio jack, and lengthen the 2 cutouts for the camera connectors. I could continue, and maybe eventually make the pillars touch the chips which are clearing them all nearly 2mm right now.
But I was out of places to get a solid grip on it for more machining. So I ordered 2 sink kits. If and when its installed, there's a fan under it. Been cooling a pi3 that way for 2 years now. Oh and I had to machine a couple mm away from the 40 pin header so a header connector would fit, which is how I wrecked the oem thermal padding in the first place. After 3 days standing in front of a 6040 mill, fine tuning my gcode, I gave up. The lack of room engineered into that heat sink sandwich, plumb ruins any chance of being able to use that kit efficiently. Header extender's might have saved the day, but I was not aware they were even made until I'd already carved this one up trying to make it actually fit, I'd have to start with a whole new assembly. Another 3 weeks to get it. And I've not measured to see if the additional height of the extender's is usable without moving the fan. Nothing I have tried to do with this pi4 has worked OOTB Except the debian net install. And its spi was broken when I tried to install the program I bought it to run. Time maybe for a break until I get my aortic valve replaced next week. Its leaking badly from 85 years of wear. Thanks Les. > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
