kaktus' guide - fans - appendix

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Location: PL

kaktus' guide - fans - appendix

Post by _kaktus_ » Fri Mar 16, 2018 12:23 am

Breaking news ...

My conjecture has been confirmed. The linear stabilizer that powers the fans must dissipate a lot of power. Due to the above it becames very hot, which will definitely shorten his life ...

By tapping it with your finger you can get very burned. I examined the high temperature of this toddler with a thermal imaging camera.
You can see the results below.

That's why I de-soldered a goldpin from the controller board (I think it's just a bad thing, and I do not know why it was designed) that there would be more space. Then I equipped the linear stabilizer with an additional heat sink.

The achieved effect is sensational. The radiator is also cooled by a nearby fan ;-)

More interesting photos on my website, I encourage interested parties to watch.

[attachment=2]PCB_M201_ma nowy_radiator.jpg[/attachment]

by the way, I will add that more and more often I think about designing an additional electronic system that would help control cooling by other fans (hot-end & controller board)
the system would have two independent channels for controlling the fan
channel first autonomous - rotational speed depends on the current temperature (maybe two sets of settings to choose from) for Hot-end.
second channel - rotary speed adjustable by potentiometer (for controller board)

important information on the end
the cooldown option does not work in the printer menu.

Generally, non-action is manifested by the lack of any reaction.
so I think this option does not work
the linear stabilizer shines like a bulb
termo-7812+.png (208.06 KiB) Viewed 543 times
heatsink recovered from the VGA card
PCB_M201_nowy_radiator.jpg (306.13 KiB) Viewed 543 times
PCB_M201_ma nowy_radiator.jpg
voila ;-D
PCB_M201_ma nowy_radiator.jpg (403.25 KiB) Viewed 543 times
de-soldered unnecessary component
PCB_M201_bez_goldpina.jpg (369.92 KiB) Viewed 543 times

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Posts: 34
Joined: Fri Dec 15, 2017 10:06 pm
Location: PL

Re: kaktus' guide - fans - appendix

Post by _kaktus_ » Tue Jun 12, 2018 1:33 am


This "large" heat sink which I mounted fulfils its purpose.
heat sink temperature measurement
IR_01246.jpg (56.21 KiB) Viewed 115 times
At the time of measurement and earlier only one fan was in operation.
I wrote that the heat sink fulfills its purpose, but is it sufficient? ;)
Geeetech Prusa I3 M201 Dual extruder Mixcolor 3D printer
bought 2017-12-19, already built, in the cognitive and improvement phase
Geeetech filament, ABS only
Geeetech 3D WiFi Module for 3D Printer
bought 2018-04-15, stored in drawer

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