Yet another M2 fan bracket - this time with space for LEDs

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Dale Reed
Posts: 376
Joined: Thu Apr 10, 2014 1:39 am
Location: Cleveland Heights, Ohio USA

Yet another M2 fan bracket - this time with space for LEDs

Post by Dale Reed » Sat Jun 28, 2014 1:44 am

All,

I thought I'd posted this here, but I can't remember where, and I can't find it, so here it is. Simple but effective: http://www.thingiverse.com/thing:348480

Be sure to read the instructions! Note that my M2 uses ALL 24-VOLT FANS, with the electronics case fan and the extruder fan (both 40 mm) being 24-volt fans wired in PARALLEL (and my LEDs in parallel with those). You'll have to figure out how to get the right voltage to the LEDs -- maybe a separate wire pair added to the bundle going up to the extruder -- if you have a stock 24-volt M2.
M2FanBracekWithLEDs.png
M2FanBracekWithLEDs.png (246.67 KiB) Viewed 2573 times
But it sure provides excellent illumination of those first few critical layers, where a decision that things are going badly can save you a bunch of filament! (Ask me how I know this.... ;) )
M2FanBracketInstalledAndLit.png
M2FanBracketInstalledAndLit.png (248.74 KiB) Viewed 2573 times
Dale

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Tim
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Location: Poolesville, Maryland
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Re: Yet another M2 fan bracket - this time with space for LE

Post by Tim » Sat Jun 28, 2014 2:23 am

The last time I asked about 24V fans, Jin mentioned some he had that were (according to him) obnoxiously loud. How are these 24V fans? Where did you get them from? I looked on Amazon but was bothered by a description of a Sunon 24V fan that had a picture of a Sunon fan that says "DC 12V" on it.

And it looks like you have two 12V LED strips from Superbright that you've wired in series?

Dale Reed
Posts: 376
Joined: Thu Apr 10, 2014 1:39 am
Location: Cleveland Heights, Ohio USA

Re: Yet another M2 fan bracket - this time with space for LE

Post by Dale Reed » Sat Jun 28, 2014 4:09 am

Tim,

I got my 24V 40 mm x 10 mm fans at 3DMakerWorld (http://www.3dmakerworld.com/store/parts ... ll-bearing). The specific fans are labelled:

Fonsoning
DE brushless fan
Model FSY40B24M
DC 24V 0.06A

and they have the CE mark and TUV Product Service mark. They are 9-blade ball-bearing fans and seem to be not ridiculously loud.

And, yes, I've wired two 12V LED strips in series, then paralleled that assembly with BOTH the 24V 40mm fans. (I upgraded my M2 from 19V / 12V to 24V but DID NOT replace the wiring harness. So my two 40mm (24V) fans are in parallel. I also tweaked the firmware to run them at 255/255 -- full on -- not 155/255 as was done with the 19V power and 12V fans on the original M2. I've also set my firmware for 400 Hz PWM of the fans instead of 31 kHz PWM -- all my fans are now VERY well behaved for speed control.)

The LED strips are from Radio Shack. I bought two spools of white LEDs (for something else), and I used the little pre-terminated and heat-shrink-over-the-connections 3-LED strips that are part of THE PACKAGING! TRY ME NOW!!! :geek: (Plus I have a couple little batteries and a couple little pushbutton SPST/NO switches from the packaging as well! RS sells the switches for a couple bucks for two, so that saved another purchase right there!)

So I had to add the comment and the info in the instructions to my Thingiverse posting about my unique printer wiring.

I suspect with the newer M2s with 24 volts, you could probably find the wires in the harness that go to the extruder 40mm fan and re-do it so as to use 24volt fans in parallel. I'll have to get out the harness that came with my 24V upgrade kit and see.....

Hope that answers your questions, Tim.

I've added a few other strips of LEDs with a little RF-remote controller that makes my M2 a real take-to-shows-and-STEM-events wowser! See viewtopic.php?f=3&t=132&p=981. (And of course, while I was searching for that, I found the other posting I did on this bracket in the "object sharing" forum. D'ohh! viewtopic.php?f=4&t=330&p=2035. Sorry for the duplication!)
Dale

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