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I am interested in purchasing a small laser (possibly a keychain host) with either a 445nm diode or one of those new green diodes. I'm willing to pay Bitcoin or any common altcoin. No paypal.

I am looking for a >100mW red laser diode and a driver to go along with it. I haven't been doing laser stuff for a while, so I forget what the driver options are, but ideally it would work with a standard 3V CR123 and the 3.7V RCR123s, but if it only works with one of those, I can deal with it...

Are there any hosts that can fit an entire aixiz module with one of those cheap dropout regulator drivers inside? It would be a plus if the host also had a spring up front, behind the pill, to prevent shock damage from the batteries slamming forward.

So, I went to check on one of my bank accounts for the first time in a while... Much to my surprise, creditreport.com had been charging me $15 a month for two months now and I was less than a dollar away from going to a negative balance (a big-ass charge is incurred if this happens). Funny thing...

I just got some panasonic HJE900s for my birthday... They're the first "good" IEMs I've ever owned, trust me when I say that skullcandy headphones for around the same price are complete crap. What makes these phones awesome is: High quality (obviously, given price and seller) Removable cables...

I figured people in this section might know some on the subject... I'm doing a research project on the human response to ambient brightness on the viewing of RGB color and RGB white balance. If anyone has any sources on related information, that would be great. To make it a bit clearer, the...

So, I think I'm picking up a Blur in S30V, unless anyone else has a better idea in the price range (ie BELOW this price, I'm already pushing it). It seems to be among the highest quality assisted openers available, and the steel is basically the best in this price range as well. Aluminum grips...

What is the input/output efficiency of LDs versus LEDs? That is, if you put the same amount of power in to a red 650nm LED and 650nm LD, without any optics beyond the diode window/LED dome, which one will register higher on an LPM, and by how much?

So, for sale is a jayrob 18650 445nm laser. I'm putting just the laser and battery out there for $220. I don't have a meter, but at this current it should be putting out around 1.2 watts. It includes Copper heatsink (better than aluminum) Aixiz 445 lens Maxed out microboost-well heatsinked An AW...

I bought one a few days back. I'll do a quick review once I get it, but in the mean time has anyone purchased Focalprice.com offers 30mW Green Beam Laser Pointer with Keychain (Black) ,discount 30mW Green Beam Laser Pointer with Keychain (Black),30mW Green Beam Laser Pointer with Keychain...

I found this little LED flashlight that seems great for a laser-an aixiz lens element fits right in the front, a diode looks like it would fit perfectly, basically it seems perfect for a keychain laser. The problem is, it takes AG3 batteries which means that battery choice is limited. I need a...

I want to get a greenie to EDC, but I want some input first. The focalprice 10440 keychain "200mW" seems OK and even broke 100mW for some buyers, but I was wondering if anyone else had any favorites.

I was just reading a thread where some guy claimed to be a doctor, saying that an "energy density of .4 joules" causes blindness. Obviously joules is not a measurement of energy density. I am wondering how many (mw/cm^2)*time or joules/cm^2 actually causes blindness or eye damage. I haven't...

So, for some reason I am always able to convince myself that the performance of anything I buy steadily degrades from the day I bought it. This applies to consumer electronics, flashlights, lasers, tools, and many other things. This usually ends up with me disassembling half the things I buy and...

I was just looking at an ad for a (high end) green laser sight from barska and I was thinking about how much of a pain it must be to totally shock-proof a green module. How shock resistant are diodes compared to DPSS assemblies? I know someone on this site has a high-end BR diode on his AR...

So, I have to replace my (not so) loved fenix ld20 after it was lost by a family member, and right now I'm thinking about the quark aa^2 tactical edition in neutral white here. I was gonna go for warm white but ~150 OTF lumens is too low for me. The neutral white only loses about 15 lumens over...

So, I posted a thread in the other section but it didn't get much attention, this is probably a better place. Just to hone my skills, I'm working on and the next step is to add an NOHD calculator. The problem is, I'm quite confused about (from here) Let's go to the first problem I have...

You know those little green squares that show your rep? At this point, most people have maxed those bars out. I would like to suggest that we change the scale, just to make it easier to see.

So over the last 4 days I taught myself how to make an iphone app. The only idea I could think of that was original was a laser utility app, and I think I could do that. I just need some equations to use :p I think I could implement things like NOHD, divergence, focal length, Raleigh scattering...

Alright, so im driving down the pacific 101 in the middle of nowhere yet I'm browsing the internet faster than with the crappy connection at where I'm staying. Awesome. The ipad is absolutely great, it has a HUGE keyboard.... Plus the 3G model has GPS and navigation. I wouldn't get one cause of...