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It also could be that the scatter is always there, but when you crank the pot up, it becomes bright enough to notice. The reason it takes more time at the 500-600 ma range could be the laser warming up and operating more efficiently. I'd suggest turning the pot back down and looking for...

I like this page for comparing thermal conductivity - Thermal Conductivity of some common Materials and Gases It's nice to be able to put a number on it. Copper has a big advantage over aluminum in this arena, and it is second only to silver as far as metals go. It's heavier, prettier, and...

So, as a Marine, you swore an oath, before God and your countrymen, to uphold and defend the constitution of this nation against all enemies, foreign and domestic, right? And by your statements above, do you not prove yourself an enemy of the constitution, as well as an elitist prick? You're a...

Source Thread So an Ophir thermopile costs $375 when one wants to compare it to your meters, but $34 when you're looking to buy one? Jerry (perhaps I should call you Mr. Laserbee. It seems somewhat presumptuous to address you by your first name,) I'll admit, I like you for the most part...

Ouch! If it make you feel any better, you're not alone with that particular mistake :o (not a diode in my case. My screw-up was much larger and harder to miss.) Hope you find it! EDIT - Oh, if it does turn up, listen to these people regarding safe currents for a specific diode. You'll enjoy...

I honestly don't know how I lost that part. Suffice it to say, I wasn't being super-extra-careful with it. Maybe it got scraped off with an alligator clip, or it might have happened when I dropped it. Also, this particular driver has been reset, soldered, and de-soldered at least a half-dozen...

I was working on a build, and I managed to bollocks up my FlexDrive. I hooked it up to the test load one last time, and I got nothing from it. Upon inspection, I noticed one of the components (as well as part of the trace for it :yabbmad:) was missing. I've exposed the rest of the trace and I'm...

PHR diode ~ $10. Fixed!

In a word, bullshit. Even if the ATF had any interest in such a device, if your uncle registered it as an AOW (any other weapon,) and subsequently gave it to you, he would be in violation of federal law. Like ten years in prison and a $250,000 fine. Unless of course he registered it to a...

What battery are you using? My 445+MicroBoost was doing the exact same thing with a cheap UltraFire cell, but it was cured (after much hair-pulling,) by an AW brand battery. I suspect high internal resistance in inferior cells is to blame. After that, the laser would come on at ~ 1.1 W after...

It's also worth noting that most people's eyes don't focus well on violet lasers, so the dot might look blurry or out of focus at a distance, regardless of tightly focused it really is. You might try viewing the distant dot through some sunglasses (note that sunglasses are not protective eyewear...

And what, may I ask, is wrong with owning a grenade launcher? Seriously though, grenade launchers and other destructive devices are perfectly legal to own under federal law here in the US. The problem is that you have to find a legally transferable device, pay through the nose for it, do all...

Or you could maybe stick them in the fuselage and run fiber optics to the cannon tips. I've never played with fiber ops and lasers, so I'm not sure if it would work.

Grid lens kit for 12x30mm AixiZ modules, AixiZ Not sure about the concentric rings, but Aixiz also has a simple circle.

It's about 1/8" or just over 3mm thick.

The advantage here is that it's cheap and available pretty much anywhere. Also, the quantity is better suited to small scale DIY interests. That, and making stuff is fun:p

I came up with a DIY idea for a driver heatsink. I started out with this - It's a copper reduction bushing for plumbing. I picked one up at the hardware store for a buck or two. After some quality time with the hacksaw and a fracking big hammer, I got this - 33 grams of delicious copper...

Nobody is burning their face or eyes off. It's light, not a blowtorch. The idea that antibiotics and drugs are safe has led to massive repercussions. The "oh, here's a pill for that," attitude has fostered countless resistant strains that continue to evolve. We're to the point of chemotherapy...

That ain't just a host; that's art. Nicely executed.

Destroy! Destroy!!!