SainSmart 2.5W 445n Blue Laser Module Kitsearch

SainSmart 2.5W 445n Blue Laser Module Kit

SainSmart 2.5W 445n Blue Laser Module Kit

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So how would I build a, strictly for educational purposes of course, cell phone blocker. Very aware of the laws and consequences involved but I would like one none the less. Anyone know what components I would start to collect? Thanks, theo!
Okay, few things of warning. First of all, don't fuck around with this if you decide to get it. This is not tee hee look how far it goes kind of laser. This laser has enough power to cut wood, leather, plastic, etc. Pointing it at anyone or anything that is not carefully planned is just asking for trouble. You point this at anything vaguely reflective and it can cause damage. It doesn't even have to hit you directly. Secondly, those glasses are garbage. Don't rely on them. Nothing plastic will save you from lasers. It might give you some chance to react before causing permanent damage to your eyesight but I wouldn't rely on it at this power. https://www.youtube.com/watch?v=qyOHq7yP63w This is my 3D printer equipped with 0.25W laser doing some engraving. Even that weak laser is strong enough to cut paper, and engrave things and make the whole room glow red.
By selling this to general public Massdrop is opening itself to lawsuits. Just saying...
(Edited)
So if you wanted to mount this on a pice of aluminum and put a couple grips on it, with a battery power supply and finger actuated 'trigger'. How big of a battery would your need. Asking for a friend who wants to make a laser blaster.
Calaverasgrande
I know this is a joke, but don't. Just don't.
This is a rather odd offering I must say. If memory serves, a 1 watt krypton generates so much heat that it requires liquid cooling and chillers to operate continuous . 2.5 watts at 445nm would run hot as well. Is this listing a typo? I think CDRH certification would be necessary to fire this up legally, but maybe times have changed. *If* this unit were placed in a housing with all the mandated safety shutoffs it could be used safely. Otherwise, this would be a dangerous toy to have sitting around. Here’s a thought, those safety glasses don’t look near strong enough to stop a 2.5 watt beam, unless doped with some pretty exotic coatings, which would costs hundreds. Question: Is this a single line emitter or multi-line? If multi-line it could be integrated into a laser light show along with a separate red beam (HeNe). A proper beam splitter would be necessary. Frankly I have never seen this much power for such a small price. Also, I don’t see all the safety warnings and lock-outs normally seen on high powered lasers for sale. I’m curious as to how this could be legally imported in the form shown above. I’ll sign up, but only if multi- line. That’s a whole lot of blue for $75, and I could have a ball with some hi frequency galvos.
Hi Guys, It should be mounted into something right? I mean you /i cant use it be holding it with my hands...?! So can you please help me understand to which machine/chase should i mount it
Rapha
This laser is forbidden in France, it doesn't follow the norme NF EN ISO 11252. To sell it is dangerous for every body, I am shocked to see it in massdrop.
KoBar
That regulation legit just says it needs to be labeled in a certain way, and since this is a kit, they cannot label it that way.
KoBar
Ne regardez pas dans le laser avec le reste des yeux.
What's the use case for this? I do 3D printing and electronics as a hobby. Is this the kind of thing that would be part of a CNC setup for laser cutting or is it simply not powerful enough for that and more for engraving?
russleyshaw
Judging from everything I've seen, seems like MUCH more trouble than its worth along with everything else. Thanks for all the links and info guys.
russleyshaw
It should be strong enough to cut thin plywood, leather, plastics and similar materials. Price doesn't seem appealing to me as I did see it cheaper elsewhere. If you have usage case for it, it's fine. However you really need to know what you are getting yourself into. I have modified my 3D printer with 250mW laser for engraving and making PCBs and even this weak version is enough to scare me. Basically light is so strong that even if I look at reflections (like those in video) through glasses it's enough to make my eyes hurt. This is also the reason why I think supplied glasses in this drop are not appropriate. Nothing plastic will provide apt protection. So I'd say, if you need it for something specific, sure. Go ahead, even though I feel price can be lower. If it's just for novelty sake, it will wear off quick and this laser alone is not enough. You'd need constant current control, cooling, etc.
Just be very aware that if this laser just glances across an eye ball, any living things eyeball, it can cause any variation of PERMANENT vision damage. I have several wicked lasers and I believe the most powerful one is only 1W, which will still fry your eyes. To be honest, the neat-o-ness wears off pretty fast. It's cool to light a friends cigarette with it. But telling them they have to put on these stupid glasses first because I give a shite about their eyesight sorta ruins the fun somehow lol.
I raised no moral issues. What is at issue is that they aren't warning purchasers how dangerous a laser this powerful is. They absolutely should be as most users won't have any idea at what point a laser gets really dangerous, compared to a knife where the danger is plainly obvious.
Copying this from the comments on the elecrow engraver http://www.funraniumlabs.com/2017/08/laser-products-hate/ Some idiot is gonna blind a bus of children or burn down a national forest, and then high powered lasers won't be sold to even responsible people. So, if you're buying this: dont be the idiot that ruins it for everyone.
Kids, if you are looking at this drop and want to buy a lazer for fun, DONT. 2.5W is a pretty high wattage for lasers, and could easily blind you if you aren't careful. I hope the 12 people that have bought this drop know what they're doing and aren't careless. Besides, if you just bought this to play with, its probably going in your closet collecting dust within a week. It's not worth risking your sight for this.
Victurtle
By "easily blind you" what he means is that since my 1W 445nm laser can permanently blind you in less than 0.25 seconds from 400 meters away, this thing can do it in less than a tenth of a second from the same distance. Imagine how much faster it could happen if you took even an indirect, reflected flash from inside your room. Something tells me you won't be lucky enough for the beam to have reflected around for half a kilometer inside your bedroom.
(Edited)
how is it powered?
jaylang11
A power supply
Very interested in this laser. Can you tell me the range/distance this will cast a detectable beam ? I need a long range laser for industrial projects where a laser can shoot long distance for levelling. Thank you
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N4482s546t
To dangerous for that, if any worker get a glint in the eye, he will be definitely hunted and have, at least, blind area in his vision. In France, this laser is reserved for professional use in optic.
N4482s546t
This laser is not for that. It's meant for cutting and engraving since it has a focusing lens. They are meant for small, up to 10cm, distances. It's also too powerful. Even simple 0.1W laser would be too much for such use case. Let alone 2.5W which can melt pretty much anything you put in its path.
Is this the most dangerous thing that's ever been sold on Massdrop? It includes goggles, but you might want to mention somewhere that 2.5 watts of laser is enough to permanently blind someone just from inadvertent diffuse reflection off a surface. "Class 4 is the highest and most dangerous class of laser, including all lasers that exceed the Class 3B AEL. By definition, a class 4 laser can burn the skin, or cause devastating and permanent eye damage as a result of direct, diffuse or indirect beam viewing. These lasers may ignite combustible materials, and thus may represent a fire risk. These hazards may also apply to indirect or non-specular reflections of the beam, even from apparently matte surfaces – meaning that great care must be taken to control the beam path. Class 4 lasers must be equipped with a key switch and a safety interlock. Most industrial, scientific, military, and medical lasers are in this category."
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I agree that a 2.5W LASER module is a dangerous thing in hands of unaware person. On the other hand, speculating on the topic if Massdrop would be selling it - is a matter of opinion. I believe that selling the device is legal where MD operates so this whole discussion is completely about the moral part of the business. The logic is simple. If it is not a legal issue, it could only be a moral one.
Liberty
A laser of this power must meet certain safety standards, varying on the purchaser's country. This product should have a disclaimer warning buyers that it may very well be illegal to own this device, and it should have safety warnings prominent all over the page. As for the comparison to knives, the danger of a knife is obvious, whereas the danger of this laser is only obvious to people who are knowledgeable about laser safety. I am fine with Massdrop selling this, but it definitely needs some big disclaimers all over the page.