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  1. AJ_Dual

    Photos of an 405nm laser diode, with photodiode, seen OFF-ON under a microscope

    How do they assemble diodes? I'd never wondered before. I'm familiar with the photolithography process for IC's. And the one part I do get is the needle that draws the tiny gold wires to bridge the components. What about the rest? Is it super teeny and accurate versions of the "pick n...
  2. AJ_Dual

    Lasers as a Weapon?

    I would suggest one of the gonzo-bright flashlight modifications that can be done with a 6-D cell Maglight body. (You buy a borofloat UCL glass lens, solid aluminum reflector, and some sort of Welch Allen bulb, and stick a ton of impedance matched AA NiMh's into those 4-cell D battery sized...
  3. AJ_Dual

    Laser pointer travelling faster than the speed of light?

    Just FYI, I didn't know it was called "Superluminal Motion" until I'd found my link. Although I did recall some vague memory that the effect was able to be seen in Astronomy, and while I wasn't 100% sure, I was pretty certain that Quasars, radio galaxies, and supermassive black holes were the...
  4. AJ_Dual

    Laser pointer travelling faster than the speed of light?

    Yes, this effect is observed coming from certain astronomical phenomena, like the ejection jets getting squirted out of (just before it would be lost forever at the Event Horizon) powerful black holes in galactic centers, where the accretion disk is squirting out the X-ray and plasma jets out of...
  5. AJ_Dual

    using a laser in a riot

    Works better in theory. Unless you've got video gear to watch and steer an IR beam, the laser is going to be visible wavelengths, and it'll be pointing out the operator as well as it'll be illuminating the .gov "forces of jackbooted opression" etc. Beam attenuation, the divergence etc. and a...
  6. AJ_Dual

    Origin of the term LASER??

    They were originally going to go with calling it "PEW PEW PEW!" but it was not professional enough, and their bosses made them go back and choose something else.
  7. AJ_Dual

    40W Laser vs. Balloons

    I would start with just an Acetylene balloon. I would NEVER mix Oxygen, or even just regular old 18% O2 "air" with Acetylene unless I had remote valves and everything rigged up. I would rather play with Cobalt 60 and no lead shielding for a few minutes.
  8. AJ_Dual

    40W Laser vs. Balloons

    I wonder if the balloons were more transparent in the IR wavelength than one would think. Things can be very different at 10,000-odd nm or so. Just like how the world looks very different under 800-900nm light when viewed under a night vision photomultiplier or a CCD/CMOS camera using "night...
  9. AJ_Dual

    The REAL Kryton GB round #3. Taking payments now.

    What sinks are those? I need to sink my Boostdriver, as I'm running it maxed, solder bridged by Dr. Lava at 1000ma, and the pot cranked, and it's blinking with thermal cutout. Also, do they come any longer, just a few mm? I'd like them to extend down to the Kryton's head, and give me a thermal...
  10. AJ_Dual

    What Did You Get on Black Friday?

    The long gun collection is about 50/50 modern, and Curio & Relic military surplus bolt-actions. Including handguns, I'm right at 40... As to "too many guns", in a way, yes it is, just because there's never enough time to shoot them all and gain mastery of them. And feeding some of the more...
  11. AJ_Dual

    What Did You Get on Black Friday?

    I got two of these: Amazon.com: Plano 108360 Gun Guard AW Tactical Case 36": Sports & Outdoors For only $30 each at Walmart where they were being sold as a loss-leader/door-buster deal. And I managed to score them on Saturday, the day after... I've got close to 30 long-guns of various kinds...
  12. AJ_Dual

    Digital Pocket Osilioscope...

    I wasn't sure where to put this, but I ran across this and thought it was cool, and would interest many of the builders here. DSO Quad - Pocket-Sized Digital Oscilloscope - SparkFun Electronics Found it here for about $25 less, although the first link has the screen shots... DSO Quad -...
  13. AJ_Dual

    New 445nm Kryton Groove/MicroBoost build blinking

    I'm going to put a few more charge cycles on this AW. Because of the long timeline on the Kryton group-buy, It sat for a year before I used it. I'll run it down in one of my LED lights, then throw it back on the charger. The charger light was green before I used it, but perhaps it wasn't right.
  14. AJ_Dual

    New 445nm Kryton Groove/MicroBoost build blinking

    I'm using an AW I bought from Lighthound. So I think it just needs some major heatsinking. I'm going to grind, cut up, and fit a bunch of pre-'82 solid copper pennies with Arctic Silver thermal epoxy, and get it a path to the Kryton's head. I'd like to route the driver heat to the body...
  15. AJ_Dual

    400-500mW greens O-Like or Lazerer

    I'm looking at high powered greens and was curious what the hive's consensus was. I get the general sense that Lazerer with their option for a power certificate etc. has put them a bit over O-like in the customer service/product quality in the collective opinion of LPF right now. I'm looking...
  16. AJ_Dual

    New 445nm Kryton Groove/MicroBoost build blinking

    You must have newer documentation. The two sided sheet that came with mine over a year ago didn't mention it. The closest it comes is mentioning a wrapping of electrical tape if it's in tight quarters inside the host to prevent any conductive edges on the driver from shorting out. I'm not...
  17. AJ_Dual

    New 445nm Kryton Groove/MicroBoost build blinking

    Yeah, I ran it till it blinked, then disassembled it quickly, the MicroBoost was pretty hot. I guess I need to sink this bad boy pretty thoroughly.
  18. AJ_Dual

    New 445nm Kryton Groove/MicroBoost build blinking

    I just bypassed the switch by connecting the case to the rear battery contact with a penny. It started strobing after a few seconds, then it gets faster.
  19. AJ_Dual

    New 445nm Kryton Groove/MicroBoost build blinking

    I just finished assembling my Kryton Groove with A140 diode, and Dr. Lava MicroBoost V1 jumpered/soldered for 540-1000mA. It didn't do it when I benched it, but it was never on that long. Now, after a few seconds of use, it starts to blink. I thought it was possibly low battery, but it's...
  20. AJ_Dual

    The REAL Kryton GB round #3. Taking payments now.

    Oops... I got impatient, and decided to hook up the A140 diode in it's Kryton head and focus adapter just by clipping my Dr. Lava boostdrive to the diode pins and touching it's connectors to my 16850 battery with some loose micro-clip test leads. I burned a hole in the fabric wall of my...


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