6HC Mainboard - Cooling the board itself?
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I'm running my Duet 3 6HC in an electronics enclosure below my printer, so it should be thermally separate from the chamber. That said, if I wanted to run speeds greater than 80mm/sec and such, how critical is it to cool the drivers/MCU? Is it more important to cool the drivers than the MCU? I'm looking to design a custom DIN mount with fans and such and want to make sure I have the important bits taken care of.
Any help is appreciated.
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A bit of cooling is never a bad thing.
The MCU likely won't need anything directly, but the drivers certainly could if you are using higher current motors.
If possible, mount the board vertically so that convection can help with the cooling.
A fan that blows across front and back of the board should be sufficient. Ideally in line with the drivers.
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@Phaedrux Thanks. I can't mount it vertically unfortunately; at least not without redesigning a lot of the printer. But it's very possible to blow across the board near the drivers.
I appreciate the quick response!
Thanks,
Micah -
@Phaedrux
Follow up question, is is sufficient to cool the back of the board around the stepper drivers? Or do the driver IC's need to be cooled directly? I see there are vias under the chips, I assume that's for thermal conductivity? -
The drivers are sinked to the copper layers of the board, so cooling the back of the board would be most effective for the drivers.
As long as you have some airflow around the board, you should be ok.
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@Phaedrux Great! Thanks.
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Here's a design to cool the 6HC underside using a 5010 blower - I haven't tried it yet but am currently printing one to test.
https://www.myminifactory.com/object/3d-print-snapmaker-j1-halter-für-holder-for-duet-2-6hc-329588
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@Forum-user Probably not the most effective orrientation for a blower fan, but it should still move some air.
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@Phaedrux Not as much as you would imagine
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@Forum-user It's basically backwards. It would be far more effective to have the high static pressure output blowing across the drivers.
