Use tool board lc1 in a printer with enclosure
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Hello everyone, I am considering buying a tool board lc1.
However, I have heard that there are problems when the tool board is installed in an enclosure with temperatures of around 70 degrees Celsius.
I was told that the tool board switches off or restarts from a chip temperature of approx. 75 degrees.My question is that what I heard about it is correct and if so, how do you get the chip cooled?
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It should be good up to 85c if I recall.
@Dogma2k said in Use tool board lc1 in a printer with enclosure:
how do you get the chip cooled?
Some setups use a fresh air supply being tubed in and blown at the electronics. Adding some heat shielding. Foil tape maybe? There's always water cooling, but that's mostly only good for specific components rather than an entire PCB.
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I had also thought of fresh air, but I don't know how to do that. Because in my opinion the tool board belongs on the print head.
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With a fan/blower outside of the enclosure with a flexible tube going into the chamber. Remember the tool board doesn't need to be ambient, just cooler than the surrounding chamber.
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Do you have an example of such a flexible tube?
Or would a 6mm tube be sufficient, e.g. for vacuum pumps? -
@Dogma2k, the LEDs on the tool board are rated to 85C. Above that, their light output will degrade more quickly.
All the other components ate rated to 105C or more. However, you must allow for the fact that the 5V regulator chip and the TMC2209 driver generate significant amounts of heat. The TMC2209 will start warning about overheating at about 100C and shut down at about 120C. So you might be able to use it in a 70C chamber without extra cooling. But it would be better to cool the tool board if you can. If you are already cooling the hot end using water or cool air from outside the enclosure, you could use the same system to cool the tool board too.
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@Dogma2k said in Use tool board lc1 in a printer with enclosure:
Do you have an example of such a flexible tube?
Or would a 6mm tube be sufficient, e.g. for vacuum pumps?https://drmrehorst.blogspot.com/2018/04/the-mother-of-all-print-cooling-fans.html
Look for CPAP tubing.
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@Phaedrux
Thanks for the link, but I think that's a little too much air. My ABS or PA12 won't be happy about that. That certainly creates a lot of turbulence@dc42
With some of them, the tool board in an enclosure at 70-80 degrees temperature caused problems and shutdowns. I think you can't keep the driver below 100 degrees with air at 70 degrees.
Is the problem just the stepper driver or the chip on the tool board. My idea would be to connect the extruder to the Duet 3 and the rest to the tool board. Could that work? -
It's just an example. Build to suit.