Banana Pi BPI-R4 heatsink and Case design

Banana Pi Router design BPI-R4(MT7988)
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50mm x 50mm, and ~2mm of the ram/emmc aren’t covered, which are accounted for via a thermal pad

unfortunately, there is 0mm of space between the heatsink and fan header, so in order to align with the mounting holes + fully cover ram/emmc it would need to be an asymmetrical shape

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1 Like
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I have a decent camera, and a tripod, but no automated means of rotating the device itself at the moment - when I have a moment I will check out meshroom, as it could be quite generally helpful if I can use it to generate models that could be sliced for my printer; thanks for the share

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Banana Pi BPI-R4 Opensource Router board case design,sample ready.

Banana Pi BPI-R4 Case
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5 Likes
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How does it look from other sides? Imho some ventilation holes are needed

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Screenshot 2024-01-10 142227
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This is the result of stressing all cores with these heatsinks. I’m using Daniel’s repo. I also ported LVTS driver to 6.1 kernel for the thermal sensors to work

1 Like
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But without having the board in a closed case,right? I remember some users uad issues with r3 case too because of missing ventilation holes

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Right, without case. I assume closed case would add another 10 degrees

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I think more if you use also SFP+, specially 10BaseT transceiver (they can reach 70C).

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Right, adding more peripherals would increase the heat significantly

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My modification is here

@dangowrt do you want to add this to your PR?

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Could you try using the mainline-version of lvts driver? It makes backporting other changes easier.

Also i miss the infracfg reset,but afair this was not needed in sdk version

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I didn’t even check if there’s a mainline version! Did some unnecessary work. Never mind. Ignore the commit

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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/thermal/mediatek/lvts_thermal.c

Should have mt7988 parts since 6.6

I have to rework the ifracfg reset part as the main resets start at 0x70 but you can start using the current version from daniels wip tree or from patchwork

https://patchwork.kernel.org/project/linux-mediatek/patch/[email protected]/

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Yea I saw that now. I should have looked first. Never mind, it was easy

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new BPI-R4 case sample :slight_smile:

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BG3_0507
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4 Likes
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This is a full metal case?? How about heat sink & fan?

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Looks nice ! Now i want one! :smiling_face_with_three_hearts: I personalny like the look of espressobin ultra design.

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Question is how are you going to cool the daughter board, I think it’s better if you went abs instead of full metal and made a mesh grille at the top for better airflow

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Maybe you could utilise peltier cooling with a fan, these should work quite well on both motherboard and daughter board or even air jets

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I definitely need one of these! Any ETA on it?