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I guess you put something in the way of the beam, then measure the size of the hole/glowing spot. :D

Depends on what you want to do with it? You will definitely need a beam stopper, I have seen ceramic tile recommended a brick may do as well. Yes, I were not thinking. :(

It might be easier to find someone nearby to help you if you stated which province of Kazakhstan you live in. :D

Anyone read this? The 5 Most Popular Safety Laws (That Don't Work) | Cracked.com

The listing is still there. :( I wonder why a seller claiming to be in China will ship only to Canada? It might help if a few other complained about him.

Yes it looks a lot shorter than 1.6m on the picture, the most likely explanation is that they use the same picture to represent the whole product range from 10-100W. You will need goggles, and since the light is invisible anyway you can just as well get as high OD as possible.

My blue-ray got lots of rpm, if I can figure out how to pack it, you can have some of them. :)

Maybe that member with the Deloran (what's his name) have some plutonium left over from the Libyans?

I have never heard of cameras at intersections to catch people crossing a red light, and I don't have* a car. That does not stop me from finding the idea rather stupid. Legitimate grievances with yellow timing should be addressable by organisations like FDM (United Danish Motorists). I you have...

So that is what scanners is about, very very impressive. (I understand your urge to post. :))

Here is the same host with a stronger drop-in. Remember to get batteries and charger. $21.73 - UltraFire WF-501B SSC-P7 (BIN C) 5-Mode 800-Lumen LED Flashlight with Strap (1*18650) - SSC Flashlights I your "store" refers to one you can walk into, it would depend on you location.

Try short the diode, I connected + straight to both +in and modulation.

Sounds strange, what is the voltage input to the driver at that load?

Try look at the bright side, it is not too bad for the price and the host is likely reusable for stronger modules. :)

If I wanted a 500mW labby I would rather pick a random ebay seller. :D

Morgan is very reliable. You could also try Odicforce, it is a reputable shop. Home - OdicForce Lasers Online Shop

Am I the only one who have reported him in the ebay system?

I have it in a 501b host from DX, the florescence is a bit disappointing. You could start with a $10 5mW 405nm pen from ebay, they tend to be 40-50mW, and if you pry off the tip you should be able to unfocus it.

Well, yes. If he wants to connect his supply to a driver it should be voltage regulated to emulate a battery, not current regulated and trying to drive some current through the driver at 13.5V. (10.5V)

As I recall the LM317 you are supposed to make a voltage divider between out and ground, then connect adjust in the middle, and you will get a voltage out determined by the relation of the two resistor values. 13.5V is pretty high starting voltage, you will need something like 4.2 or 8.4v.