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Thanks, yes diode is PLTB450. To start with, I will give 1.6A only, because don't want to burn laser so fast. Also I will use good heatsink with cooler Heatsink Style TO5 Laser Diode House w H Fan Cooling with for 445nm Glass Lens | eBay. I hope will not fry my laser like every. Last 300mW...

Found some calculators. Is that circuit I chose good and reliable? Btw, how should I make so exact resistances? Or there are better circuits? P.S. you can recommend me a good driver from...

Hello, I want to build a 1.6W 450nm laser. It's my not first build. Previously had 635nm 350mW build. I'm looking for a reliable circuit for my blue diode. I want to build power supply circuit on my own. I have LiPO batteries, 8.4V or 12.6V. Is there any possible circuit to be built?

I have not Aixiz but almost the same module Focusable Laser Module Host 5 6mm Laser Diode Case w H Lens DIY Laser Host 1pcs | eBay . If I put those 4 parts from left, into big heatsink, it will be good?

How do I test if it is working good without LD and test load? I ordered LPC-836 LD, max safe current 340mA. Aixiz module will be enough for heatsinking or not?

Do not worry about voltage? This won't fry my voltage? Because I'm scared of wasting my money again ang burning the LD.

Hello, today I built LM317 LD driver. http://www.rog8811.com/LM317%20components01.jpg?0.35312663627278806. Problem is that when I turn on, resistors are on 5 Ohms, voltage between LD+ LD- is almost the same like power supply. Power supply ~7.6V (not fully charged). I added test load, Turned POT...

Hello, I'm again trying to build a red powerful burning laser. Last time I burned 300mW laser with 100mA current when diode was in big heatsink in 2secs. This time I don't want that happen again to me. I have focusable laser host Focusable Laser Module Host/5.6mm Laser Diode Case w/h Lens/DIY...

Hello, I'm again trying to make a red powerful burning laser. Last time I burned 300mW laser with 100mA current when diode was in big heatsink in 2secs. This time I don't want that happen again to me. I have focusable laser host Focusable Laser Module Host/5.6mm Laser Diode Case w/h Lens/DIY...

I'm worried about that there is not laser diode 5,6mm TO18 size :)

Why my lenses could be without enough power? They focus beam into very small dot. So if I put my housing into big heatsink it won't die?

Maybe this DVD-RW would be with needed diode? Pioneer DVR-112

I have a lot big heatsinks at home. The problem is that laser housing doesn't take over heat fast. When my laser diode died, housing was just warm and little later it became hot. What to do?

Look Focusable Laser Module Host/5.6mm Laser Diode Case w/h Lens/DIY Laser Host/1pcs | eBay here you can see heatsink.

And the problem with heatsink: laser metal housing became hot after burning out. So bigger heatsink won't help?

ebay :) because there is cheapest. So what about resistance measuring?

Yes, I always check the driver before connecting and I always shorten capacitor. EDIT: This LD http://www.ebay.com/itm/300-400mW-brand-new-red-laser-diode-from-LPC-826-/180799418978?pt=LH_DefaultDomain_0&hash=item2a187c3262 Here says, that safe current is 400-500mA. How to exactly measure 2.5Ohm?

Now I want to buy LPC-826 diode, it is very powerful and cheap. Can I use LM317 driver? I need a big heatsink, right? If I put LD into housing, and that housing into heatsink, it will be OK?

I know exact names of burners, but how to know which diode is in it?

Which are old and which are new? How to know?