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3.1W 9mm 445 fan cooled handheld

djQUAN

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Collection? I can't call it a collection yet. Too few haha Just let me know when you drop by
 



The Lightning Stalker

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I had the exact same idea for the exact same heatsink. Great minds think alike, I guess. Mine still hasn't
come in yet due to some kind of shipping problem.

Where did you pick up the battery holder?

+rep
 
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djQUAN

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:beer:

I got both the heatsink and battery holder from fasttech. It's a 2x18650 holder already configured in parallel.
 

djQUAN

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Finally had access to a lathe. Made a new shroud from another length of PVC.

It looks like a jet engine now. :crackup:



Reminds me of those things they race in star wars


Added a fan guard to keep my finger away from the fan blades.


made a focus adapter from a scrap piece of polycarbonate after burning my finger while focusing. ouch!


Every laser needs a label so I peeled a label off a harvested DVD burner. :na:


I also added a DC-DC converter from a cheapie flashlight that converts the 4.2V to 6.6V driving a 5V fan. Now, not only does it look like a jet engine, it sounds like one too :crackup:
 

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djQUAN

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Bump. First post for 2014 :)

My uncle and I used the lasers to light fireworks. Worked well, my 1.7W lit them up so-so while also quickly reaching the duty cycle limit.

The 3.1W laser worked almost 100% duty with no overheating issues until the battery died. My uncle managed to drain the two Panny 3400s lighting up fireworks with the laser mostly on for almost 2 hours straight with a few secs rest in between. The supercharged fan worked a treat! :beer:
 

Tmack

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Just got a hold of a sweet little 12v fan . I need to give this a try.

At 12v my fan is stupid powerful, scientifically speaking :p
 
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Pman

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Love the ingenuity. REP when I can get to my computer (Galaxy S3 won't allow)

Got ya
 
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djQUAN

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Tmack

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About 1.5x1.5". Type NMB-MAT. MODEL NUMBER 1511FB-04W-B56
12v
 

djQUAN

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Should still run very fast with two cells. Just make sure the air passes to as much heatsink surface area as possible and it will be very effective.
 

Tmack

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I tested with one cell and it runs very fast even at 3.v . I also have one of those tiny 12v cells for cameras or something but I wonder how long it will run it.
 
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djQUAN

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Is that the fan used in the harvested projectors? I only got the bigger ones from DTR. The smaller ones weren't available at the time.

Those 12V cells would last a few seconds at best. If you open them up, they're made up of about 8 button cells in series.
 

Tmack

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Yeah I think it is. It's from Hakzaw1.

I ran the little cell for about 20 seconds. But from what you say, I probably damn near ran it dead. Still reads 12v on my dmm. But I didn't think it would last more than about a minute. My pocket dmm uses them and I was just wondering. I think the way you did it is best.
 

djQUAN

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use those li-ion - USB charger boards from FT or DX. they got tons of those which is a convenient 4.2V to 5V regulated converter.
 




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