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Old 07-13-2013, 12:26 AM #1
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Default my laser doesent quite work right

I recently purchased all the materials to make my first blue laser. I've diy'd several greens but here is the problem I get it all put together with a full battery and I was surprised. I was getting mW's not like 750 or even 200 I'm talking less than 200maybe even less than 50. My light was out shining it. here are the specs

diode: 1 5 2W 445 Blue Laser Diode in Module w Leads | eBay

the host is a survival laser S4
the lens is a survival laser 445 AR
the driver is a survival laser 1.25A driver
the battery is 1 protected 18650
right now I am charging my other 18650 to see if increasing the voltage will help. I wanted to under drive this diode a bit to make it last longer but as of now it can't even outshine a store bought red pointer. I'm thinking about getting a drive that outputs more current. Any thoughts?


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Old 07-13-2013, 12:35 AM #2
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Default Re: my laser doesent quite work right

Did you short the leads of your driver prior to soldering them to the diode? Sounds to me like an LED laser diode.
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Old 07-13-2013, 02:55 AM #3
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Default Re: my laser doesent quite work right

Quote:
Originally Posted by Speedy78 View Post
Did you short the leads of your driver prior to soldering them to the diode? Sounds to me like an LED laser diode.
yes, I did that. It's a m140 diode I think I found a problem I was in a rush when I made it and I seemed to have soldered the case pin directly to the ground on the driver. I'll fix it when I get home on Sunday.
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Old 07-16-2013, 10:56 PM #4
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Default Re: my laser doesent quite work right

You need 2 batteries bro with that driver. Try 2 18350's. You will see the light!
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Old 07-17-2013, 12:32 AM #5
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Default Re: my laser doesent quite work right

Yep your driver is out of regulation. You probably are only getting a faint light out of the diode. You need to switch two two Li-ions in series or switch to a boost driver to continue to use an 18650.
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