Recent content by Benjamax

Thanks for the suggestions guys. I think it's the same seller. Found on ebay but currently his shop is empty, 0 items.

50mW de-focused to 14mm is not going to burn wood from a distance, but is still very dangerous for eyes. A lot of what's on the market is often mislabeled and higher than declared. Most of the non-red common and cheap lasers emit a considerable amount of IR too.

50mW green beam at 14mm diameter spot would be fairly invisible. The deterrence effect of a simple laser beam against criminals is highly doubtful.

A green beam isn't going to deter anyone. I happen to install home and field security systems. Although they're mostly local and proprietary, I've had some experience with Amcrest products and was happy with their systems. A good DVR software allows you to select specific area sections in the...

Hi and welcome, 30mW of green is decently visible at night, in a place with little to no light pollution, and specifically when looking along the axis of the beam against a dark background. I don't think burning is an issue as long as you're able to screw it a little out of focus. I would worry...

There are old posts asking for quality 10440s and one or a couple asking for high discharge ones but those are ~10 years old. Things have changed and the links in the comments don't work. I need a couple of high drain 10440 Li-Ions. All I've found so far was either shady and/or with high...

Awesome!

That is amazing then :) You are certainly not an average 15 year old. My drivers in DIYs are either cheap ebay crap or primitive use of LM317s, AMC7135s and a couple of transistors. I would greatly appreciate it, and probably others would too, if you find the resources and time to write a...

Hi Giannis_TDM, not to intervene here in the subject at hand or derail it, but an innocent question out of my curiosity. May I ask how old are you? I'm asking because styropyro regarded you in his last video (just out a couple of days ago) as a 15 year old. You don't sound anywhere near that...

Congratz on getting it. The color must be spectacular in person.

It may still have protection because a Li-Ion battery that has dropped to 1.5V is really dead and would give almost no current. So it may recognize ~1.5V+current as Alkaline or NI-MH. edit To answer the OP from my own scope of knowledge (which is not a lot but better than nothing), I am...

Hi and welcome! Hope to see you build crazy stuff and post it here too ;)

Welcome to the forum and to the hobby. Good idea to get glasses as 200mW is way too powerful to start with, IMHO. I'm in love with that bright glowing 650nm red color and it was of the first laser DIY projects I built because its diodes are relatively cheap for their rated power, compared to...

For self defense, I think a laser is a very bad idea because you're going to have to aim for the eyes, which may be very difficult, even impossible when you're in an emergency and have only a few seconds to react. Also, you are almost certainly going to permanently blind your target, which is...

Yes the laser works quite well. The dot appears, to my eyes, brighter than the one produced by a cheap laser of 650nm/3-5mW. Perhaps because the 632.8nm is closer to the green than a 650nm? also could be the difference in collimating each one achieves. So I was surprised to learn HeNes are...