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If anyone was wanting to see a compilation of some of the photos I've taken of my NUBM31 laser pistol, here they are! This shot here shows me experimenting with beam expansion(Low power test). Interesting shape it created from 15ft away.

Well, the 600w one on Amazon max voltage is around 90v. Is it possible it's still peaking higher than its max voltage? Cause if it doesn't, wouldn't that mean it's perfectly safe since 90v would not be able to draw significant amperage? I mean, it can't be peaking much higher since it's...

I haven't really mentioned the details of my business here before, but it's a video game development studio. We keep in touch with many Youtubers cause they are the bread and butter of video game marketing. Particularly the Youtubers that play games, which actually dominate Youtube in terms of...

You'd be surprised. Youtube revenue is pretty poor. Roughly you get between $500-$1000 per 1 million views. You are basically a public figure by the time you are making a good living. Styro doesn't really post often enough to be making a 'fortune' off his videos. Things of course change if...

I wanted to make a new thread on this video I made since I found this phenomenon so fascinating. When the focused beam is small enough, something really surprising happens when pointing into black coffee. The coffee seems to reach a critical state where the laser is absorbed so fast it...

I wanted to point this out. This is why I was under the impression these ARE in fact supposed to be run in series. This is the spec sheet from Nichia. The voltage is calculated in series. Why would only series voltage be listed if it was intended to run in parallel like you claim? Am I...

I'm no expert. But since you are in parallel, I believe the voltage should be around 20-22v. The current should be roughly 5-6 amps, and 7 amps if you have good cooling for the laser array. Speaking of cooling, what are you using for cooling your laser array? Do you have a good heat sync? I...

Do you have a link to the boost converter? It's very important that it has current control, but I'm sure you know that by now. ;P

That should work, given the battery and converters can handle the high amp load. What is the max voltage of your boost converters?

Positive is the side with the model number on it(NUBM31), in that picture it's difficult to tell for sure what side we are looking at. I quickly threw it together so I might have made a mistake.

Actually when I referred to running NUBM44 from 18650s, it was actually 2 in series(So 8+volts). As I mentioned, of course I would never recommend this, but it was just a fun experiment. The high watt blue diodes are impressively durable. I honestly feel that if my laser gun ever dies, it...

Out of curiosity(not trying to argue again), why is it better to run them in parallel? It's clear each row is already 5 diodes in series.. I thought series was the recommended wiring from Nichia for this device..? Also, from what I gather, I think @toutan Is looking for a pre built driver...

Yes, the 8 Panasonic 18650s were getting too warm. There was one point where they shut off for a second when they were getting low. I'm not worried about the new lipo batteries I got though, they can handle a ton of amps. I'm running 300 watts out of them now, and they don't even get warm in...

Yes. Everyone knows how dangerous a gun is. But if I gave this laser gun to some devious 11 year old, it's likely he would start firing at everything, and possibly at people "pew pew pew!". On the other hand, give him a rifle, and he would probably(Hopefully) know better than to fire it in...

Cause it's tiny. The original design I had a full size CPU heat sync(Which was more than adequate) , but because it was so huge on the gun, I went out and found a mini CPU heat sync. For the driver, I'm using a $25, 600W voltage/current regulator from amazon. I thought it was a pretty...

I just found it funny when you made a funny assumption that my business is doing poorly based on nothing. I guess I should have sucked up to my teachers and randoms on forums more, maybe my business would do better. Really weird thing to say. :p

You're definitely here to put people down. ;P Attacking my business now which you know nothing about. :P

The 18650s were cheap Chinese ones yes, but I've measured their peak to be around 8 amps, and those things can likely spike well into the 10-20 amps range. I've experimented in powering nubm44s with my home power supply, and they always seem to have a hard 'gate' on amps vs volts (until they...

You need to try to remember that this is a hobbyist forum. Making a laser gun for fun is not the same as making some laboratory laser, or a laser product that you are going to sell. We go in accepting we could loose parts during the process. I personally enjoy the challenge of getting the...

Hehe thanks. I will admit, the heat sync is not enough to keep it cool much more than 30-40 seconds of straight run time. after that length of time I have to wait around 20-30 seconds for it to cool. Especially now since I increased the power after the video with Lipo batteries. I'm now...