Search results

Those are pointless to do anything with. just spend $5 and get a LOC that will be both stronger, and easier to actually use for anything.

The value of the resistor really isn't critical so long as it's low enough to give a measurable drop in the battery voltage. Theoretically the IR measurement should be about the same regardless of the amount of load.

It doesn't. It's spam. Both of his two posts are links to that battery site.

This is also an example chart used to show the ranges of indistinguishable color ranges. How that actual picture looks isn't meant to be a 'test' of it. Only a representation of the data. How that image itself looks will vary from monitor to monitor.

Actually according to Will these will vary. they'll be between 510nm and 515nm. Unless you want to pay his premium for 515-520nm diodes.

520nm and up diodes will likely drop in price as pico projectors become available, though in $300 devices I doubt you'd see the price of the greens being much below $200.. For one. the projectors will only have one each of Red green and blue. And selling harvested diodes, the only real...

These particular diodes are new, not harvests. The production pico projectors will also be using >520nm diodes and not these <520nm ones. And while probably available in the next few months, the direct green pico projectors aren't as of yet on the market.

As an IT person who works in schools. I can tell you why they don't get replaced. They don't get replaced because the IT staff just knows the kids will tear them up again. It's just throwing money away.

Acually <5mW means it's less than 5mW (well, it's supposed to be anyway) That's what the < is. However the newwish 405nm pens generally run between 40 and 60mW Though i've seen one as high as 85mW before.

One key difference though is that these single mode 450nm diodes are 3.8mm instead of 5.6mm. I believe the Vf is also even higher than that of 405's, but not as high as the 510's.

I missed the part about the crosshair disappearing. Was skimming at work. :P

Well you don't need anything special for safety goggles for co2 lasers. A normal pair of glass or acrylic goggles will work fine, since pretty much EVERYTHING is opaque to 10600nm. Plus the danger with them isn't really hurting your retina's, since 10600nm won't pass through the cornea either...

Um, it should only work with your right eye unless you flip the image to reverse the dot and the crosshair. If it works with your left eye as is, you have a non-standard blind spot in that eye and should probably go see an eye doctor.

I imagine he's either tilting his head, looking at the spot, using the wrong eye, or just not getting close enough to the image. I had to be around 5" away from the monitor for it to work. It just depends on how big the image is. It WILL happen for everyone though. If it doesn't work, your...

I would recommend some form of heatsink. For something like a PHR you don't need a lot, or anything extravagant, but I advise using something.

About your only choice is to build one yourself, or order one of the laserlands 50mW newwish pens and potmod it down.

Actually I believe the new low power single mode 450nm diodes can be pushed past 100mW. So DIY with decent beam specs in this power range IS doable. Though it will still cost more than the high power 445's.

I actually have one of these video modulated metrologic lasers. I think I paid $10 for it at a hamfest 10-15 years ago. Though it's non-working. One of these days i'll poke at it and figure out what's wrong with the power supply and retube it. The original tube was EOL.. light pink discharge...

Not sure I believe the 'increased risk of exploding'. the AW 10280's I have just get 'slightly warm' charging at 300mA.. Pretty much the same as any other battery i've ever charged on these chargers.

The WF-188's I use work fine. You just have to set them to 300mA instead of 600mA