Search results

Just based on the color of that one, I bet any but the most powerful red lasers would reflect harmlessly off its scales anyway!

I kinda' want a gecko now too. Why would you want to laser that little guy? I suppose it wouldn't be too bad to just burn off the tail: at least those grow back. Even as a kid, I could never bring myself to torture little animals. You've got to be a little suspicious of children who pull the...

Lasersbee -- It would be nice if it could be scaled down (it's sorta' heavy), but if you have the phone much closer to your eyes, you can't focus on its screen. You might be able to shorten it by a few centimeters...

I'm working on it, but I try to restrain from posting unless I have something interesting to announce. Given my recent total failure at getting a flyback transformer up and running, who knows when that might be? :(

...Then you shouldn't be letting him play with it -- that's your responsibility. Unless you *really* got ripped off, a $120 laser is going to be well above 5mW, and therefore dangerous. If someone pointed one of my lasers at anyone's head (even the back, and especially my mother :p ), I would...

So I managed to get the flyback out of an old TV. Then I built a 555 oscillation circuit to drive it. Then I converted an old computer's PSU to a DC power supply to run the circuit. Finally, I hooked everything up, and promptly exploded the driver's MOSFET. I'm pissed. I'm going to try again...

Tried them in series - much better, thanks! I'm still pretty stupid when it comes to electronics...

Thanks for the schematic, meatball! I'm going to try this, I think. Does anyone have any advice on harvesting the actual transformer from a disused color TV? I've got one that's just itching to be torn apart....

Ha!! That robot's got nothing on my goggles, though, Photonaholic -- I don't even see any duct tape! So, I bought a few high intensity IR LEDs (annoyingly, their wavelength wasn't indicated) and wired them up in parallel on my breadboard...Not particularly good results. No sir. Either they're...

I wasn't sure if the iPhone had an IR filter, but you're probably right - that would explain why IR illumination looks so dim. Eh, once I have to start taking the phone apart, I might as well try to build a night-vision system from scratch. I guess it's not worth it...Thanks for the input!

Me too! But I want to see what y'all think about the feasibility, before I try to build the thing...Seems like one or more omnidirectional (or less directional, anyway) lasers might be more efficient than a cluster of LEDs.

So, my experimentation with my iPhone as Safety goggles ( http://laserpointerforums.com/f44/indirect-viewing-laser-safety-48622.html#post663468 ) led me along these lines: The phone's sensitivity to IR is not particularly high, but I wonder if one could build an effective IR illuminator using an...

I'm thinking about building one of these things too - can you elaborate on what would be required, using a monitor's transformer?

Yeah, since I settled on this "design" for my current generation of lasers, I've been making sure to run them for less than 30 seconds at a time. Hoping that's good enough, since they're not really heatsink'd...Well, in the worst case, they're pretty cheap diodes.

That is incredibly cool. And here I am getting a kick out of etching wood at 5" with 405nm. I can see my laser building (and hopefully not my days of being able to see) culminating in something like that.

Scopeguy's anti-405 glasses are very good, by all accounts (and very cheap). I got a pair myself, and I can tell you they cut the glare from a focused burning dot at arm's-length down to virtually nothing. The multi-wavelength glasses you mentioned don't seem to be specifically rated against...

Oh ya, good point. There's plenty of threading left to attach the knob, if you glue it...The above module is also using the spring from a retractable ballpoint pen, because I lost its original one :D

I just made a useful discovery for people like myself who are just starting out with this stuff (though it's entirely possible it has been noticed before on this forum -- if I'm being redundant, I apologize). I've been having trouble properly setting my PHR diodes in the AIXIZ housing. It's...

Thanks! I just finished building the other one, and I've been running it at ~250mA. Hasn't blown yet, though I'm under no illusion that it's long for this world...I fear it a bit, so I added a pot before the resistors in case I lose my nerve.

I finally built one of my PHR modules (and my ever-decreasingly sized DDL drivers -- it's down to a footprint hardly bigger than the LM317) into a decent(ish) host. Also, I set the diode correctly! I should have taken people seriously when they said to make sure that a 405nm is more than...