Recommendation on Duet Part Cooling Issue
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@Phaedrux can't wait to try the Sunon.
Based on what you all have said, I ordered a few Mosfets and there is a little computer repair shop near here that I'm going to talk to.
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Here is the carriage configuration. I think heat and angles shouldn't be a problem.
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@Phaedrux Struggling to find any Sunon 24v blowers in stock :-(. I'll keep looking. But, the blowers at digikey seem like a notch up from what I've been using so, if I can't find a 24v Sunon, I'll probably try one of these:
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If you look at page 11 of 14 in the linked pdf file (@Phaedrux post), item 7 specifically says not to use PWM on either + or ground to control speed.
I recall seeing something a while back about the Sunon fans with mag-lev bearings not working well with variable speed via PWM. These fans have something called "vapo bearings".
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@mrehorstdmd And yet it works perfectly well down to about 15% speed.
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@Phaedrux and @mrehorstdmd this is part of what I love about 3d printing. There is as much devil and as much detail as you could ever want . . .
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@jrwaters2 some sunon fans don't play well with PWM and are either on or off. I believe the feature is "auto restart" and the fan reboots if it's not spinning when it thinks it should. Essentially you need a sunon without a letter A at the end of the model number
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@jay_s_uk that is extremely helpful - thank you! Most 24v Sunon's are out of stock. I did find one from Mellow on Ali Express that claims to be a genuine Sunon and even has information on how to tell a genuine from a fake. Its the same price as from DigiKey but they have in stock
I was going to order from someone like DigiKey or Filastruder or Matter Hackers but that doesn't seem to be an option at the moment.Interestingly, the Mellow one states "Upgrade: New fan support voltage to adjust wind speed"
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@jrwaters2 the mellow ones are ok as far as I'm aware.
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@jay_s_uk thanks - I ordered one today so will see how it goes.
