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I too am curious of this. No mention on here or ebay. "1) % efficiency in light output"

I etched boards for a few years but got lazy. Its a tedious endeavor. I got quite good at it, but hated the toner transfer part. Finding the right paper was a pain in the rump, Even tried the special made clear transparencies from the local electronics shop. Just such a pain lol Something as...

Damn, I knew that would have been too easy. Though at least one step can be skipped and that is the toner transfer by using black paint and engraving the layout then directly into the acid bath. Some neat systems out there, this guy showcases one with appealing results.

Forgot to add and will reserve this spot for pics; I bought a block of nubm08's where I plan to remove a row of 4 and use the remaining four in their mounts to knife edge and focus the combined to a fine point just deep enough to breach the copper layer on PCB clad. Would 20W be sufficient, or...

So I finally upgraded my generic laser engraver from its stock "2.5W" which turned out to be 1W. I replaced the diode with an nubm47 and am successfully etching into aluminum with the aid of black marker @5.5W. I would love to be able to etch PCB's by burning off the copper clad and avoid...

Every time I find a deal on quality 10440's and harder to find sizes I buy extra even when I dont need them. I check all the cells and charge / discharge to 3.8V before I put them away. I hear its an ideal voltage for long term storage.

I think I may have overshot the current big time. This "benbox" software is super buggy. The intensity setting for high output will produce different currents at a given value each time you change the value. So where I had tested 5.1-5.2A there may have been much greater spikes. Ive got it set...

One more question regarding these nubm47's So I got one installed on a laser engraving machine. Nothing special, its a run of the mill generics that was advertised as being 2.5W and was only outputting 1.2W and blew at 2.1W. I turned the trimmer up on the PCB and was feeding the new 47 LD...

Only when heating up a cup of coffee! I ran the first test in the block, then the second test (post extraction) in a testing mount that tightens down with threads instead of a press fit module. The output was without lens in both tests at equal distance.

interesting. I'll check that out when mounted. I didn't use a lens initially because the diodes were in the block and didn't want to fiddle. Was just going for the baseline test prior to heating to see if there was any signs of damage. The average output was 5.7 - 5.9W @ 4A

What areas of a vehicle do police officers target? Laser guns require a reflective target to get a reading off of so police have several primary targets that they aim for when clocking moving vehicles. These include: Headlights / tail lights Grill License plate Those are shiny and...

Radar traps must love that car lol

Wasn't comparing them, but given the nature of the post even the red LED would be overkill. That is unless the goal is not to make a point of 'back off' and enter into the realm of doing harm. Increased brightness of red may cause discomfort, but do not trigger the neutralization of the...

lol I had the same thought using the red led out of the 'cashew' projectors. IIRC they run at 12A or so. Would have to wire up with a relay but i'm sure would be very effective. Perhaps a timed short pulse so its not so dangerous?

The windows of the LD's were clean before extraction, and am not noticing any new spots or lines in the output. So I think its safe to say they acquired no damage during the extraction. I was worried some flux or indium may splash. Cant remember where I read it, but there was also correlation...

I meant its a good thing they are not pressed into their seat and soldered. That would be quite tricky. Ended up setting the block on top of two AL blocks on the edges. Placed a thermal probe in one of the holes of the LD block and gently heated. Popped em out with little issue and didnt exceed...

Accidentally deleted my last, thought it posted twice. derp. Great video, thanks. I was wondering if they easily pop out or needed a good press. Good thing they didnt press fit these as well lol

Haha you laugh at the milling idea, but its still better than the slingshot / brick wall / magnetic broom idea I had 👀 Appreciate the help. I'll desolder the pins with my iron, then move to the reflow station and follow your instruction. Thanks again, I hate making mistakes that are costly lol

Damn lol.. Thanks for the input. The projector only has 700hrs on it and is fully functional. Only paid 100$ for it, so not too bad of a deal. Whats the safest method of extraction on these blocks? Ive seen heat used, but I also have a friend with a mill. What would cause more damage do you...

Hey folks, I picked up a projector and before tearing it down would like to know what diodes are inside. I was trying to get a xx-V2 but cannot find any locally. I ended up getting a low hour used xx-V10X which is a 3000 lumen model and from memory may have the NUBM42 or similar, but dont want...