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It was for sure, it's a lot of fun and very addicting, plus a nice challenge working with the small and sensitive electronics. I think one day I want to do a different type, a gas or solid state laser. Building a ruby one would be fun, and a nice piece of history too.

I have a big blue diode, NUBM44 I believe, but I think I want to do a powerful green next, I bought a 450nm from jlasers so I have blue covered at the moment. I also have a 502nm module I got from zraffleticket, and a 488nm module to build as well. Then after all that probably a red of some...

There's not enough room on the inside unfortunately, the back of the module is sitting against the driver, which is up against the battery contact board. I'm looking for a half length module to replace it but until I can find one I'm just watching the heat and trying to keep it cool.

Got my first build put together finally. It's a Sharp GH04W10A2GC, I'm using the open source boost from @Giannis_TDM set at about 800mA which should be about 1.2 watts, but I have no way to measure that besides it looks bright and burns things (including my finger) pretty easily. A host from...

I would love to have one of these, sending a PM.

You still can, I have UVC tubes that emit at something like 185nm and 250nm and they can really make things fluoresce . They're not that powerful though, and also pretty dangerous. His idea was to use binoculars and just scan with the laser over a large area at night. It's a cool idea, so I'm...

Until recently I've only had some 21700s for flashlights, and they have USBC built in. Otherwise I just use NiMH and I have a charger for that. If I end up with a battery collection I'll need more than a Jerry rigged charger for sure. I'll look into the opus, thanks!

Not a bad idea, if for nothing else than a comparison. It's cheap enough anyway. I made an offer for one for $8 that was accepted so worth a try. I think I'll contact lifetime 17 to see what he can do about making a proper host as well.

I've seen his stuff and he does good work for sure, I suspect custom work will cost too much for me at this point, but I can certainly ask him, thanks!

I've mostly just been messing with my lasers on my bench, playing with lenses and power outputs and getting a feel for things. My brother is a rockhound though, and thinks the UV laser I have would be awesome for finding fluorescent rocks. I'm a little more skeptical since it's a very long wave...

I ordered a laser that takes a 14500 battery, and I realized I have no way of charging them, so I whipped this up. Sure is ugly but it will work.

When I run the diode with no lens it's a very clean beam, so it's something with the lens. I cleaned both sides but the dots persist. It must be something stuck between the elements. Those are expensive, and for not much output. Probably not worth it over an LED at this point.

That is good to know. I don't have much need to make this one extremely powerful anyway, so running it at lower current is no big deal. I'm impressed by how much the lens can spread the beam out, it seems to make a pretty good UV flashlight although 405nm is pretty long. Too bad there aren't any...

OK cool, I bought a G8 lens with the diode housing, and a 3 element lens to build a pointer with, I could certainly order a G2 to try it out as well. Thanks! The sharp 405nm laser I bought came mounted in some kind of holder with a heatsink and a lens. I've just been messing with that so far...

For sure, I did get a good set of glasses that protect between 190-540nm, I do a lot with UV so they'll help there as well. I appreciate the offer, I will keep that in mind. Interesting, I bought a diode with a housing and a few different types of lens that screw into the front, does it take...

Thanks! I just bought a bunch of stuff from you on ebay, including a pretty powerful diode for when I eventually get brave enough to use it.

I've been reading for a while but decided to finally join. I'm a longtime electronics enthusiast and I decided lasers looked pretty fun. I remember looking into it maybe 15 years ago and powerful lasers were really expensive. I'm kind of blown away with how inexpensive everything is now. I...