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9mm NDB7875 445nm blue laser as 1st DIY laser

J

juiklo

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Sep 17, 2012
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I got myself a Nichia NDB7875 445nm 9mm,set in a 12mm copper module with 405-G-2 glass lens. It's driven with a X-drive V6 buck set to 1.8A. Powered by 2x Tenergy 18650 3.7v 2600mAh Li-ion with protective PCB. The host is a Sky-Ray SR5. This is my 1st DIY laser,I didn't know the V6 driver needed at least 5v to kick in. Right now,I have 2x18650 taped together and ordered 4 18350 with a charger. I should be able to fit 2x18350 into this small host withouth use of the greatest multitool ever made,tape. The diode is rated 2.5-3W output 2amp max

As it is,it lights up great. Having a fun time burning stuff :shhh: :evil: :eg: and lighting up at night time :). My question would be,is there anything else I can do to make the beams stronger? ex;burning faster,longer range,brighter

What other host can I use with a big heat sink and will fit 3x18650 or 4x18350,since I already ordered those.

I'm a noob and ANY kind of input would be appreciated :thanks:
 





2d/3d mag would give you a pretty decent heatsink. Plus there are already threads on here about modding them, so it shouldn't be too difficult to do.
 
juiklo said:
My question would be,is there anything else I can do to make the beams stronger? ex;burning faster,longer range,brighter
Click to expand...

Yup try a new driver at 2.1A ;) You wont notice much difference though, in terms of beam visibility...:beer:
 
Well thats a nice dot !
And the host looks awesome as well, it can fit a really big heatsink.
 
juiklo said:
The LD is rated 2A max,wouldn't a 2.1A driver fry it?
Click to expand...

2 A is recommended max, but I have seen quite a few builds at 2.1 A and some have even driven them beyond 2.2 A... There's no guarantee of course...! ;) :beer:
 
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Man I shure hope you have laser glasses:eek: And yes a 2 to 2.1 amp driver should be just fine. That is a nice heatsink but the host needs to be replaced or maybe a extension tube to fit 2 x 18650s.
 
n2stuff said:
Man I shure hope you have laser glasses:eek: And yes a 2 to 2.1 amp driver should be just fine. That is a nice heatsink but the host needs to be replaced or maybe a extension tube to fit 2 x 18650s.
Click to expand...

But of course,im a noob but it's the first thing i ordered. Ok,maybe not the first but already had it when i 1st turned on laser. I was actually thinking about making an extension for the host. Rather get a bigger host and bigger heatsink instead.
 
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