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I found the driver was defective, it just quit working, I'm already dealing with the seller for a replacement one. When possible I'll update this. Thanks for the help! 😄

Need to check this out, the first test I did was with 8 diodes, then I started to ditch one by one, until the output voltage reached 4,5V, I could have messed this up, because I was using a 1Ohm resistor, so at 4,7A it would have 4,7V across it. I grabbed a 0,68Ohms resistor and tried again...

Hi there! I bought this driver to drive a NUBM08 diode, but before I connect it to the driver, I would like to test it, but I don't know what to look at. My idea is to connect three diodes in series with a ampmeter to make a test load and conect a osciloscope in paralel with the driver output...

Hello! What a big time since my last activity! :) I have a laser printer/engraver that is powered by a 1,6W 450nm laser module and I can get pretty sharp and deep contrast pictures on MDF sheets. The best speed for printing is 1400mm/min which is very slow, but was the fastest the machine...

Yeah, that's true, I don't recommend this board, I still using it because is powering a LPC-815 and I have 5 more of it in cause that one gets damaged.

So, what kind of damage can occur? If the diode starts draining more current, then the voltage will be reduced by the current regulator.

I managed to get it to work with the LPC-815, first I turned it on with the LD connected set to 400mA, then I measured the voltage across the LD, I got 3V. Next step was to set the voltage trimpot to 3V. Using the osciloscope I seen that when the TTL goes high, it aplies whatever voltage was...

Good news! My board comes with the "laser" label on the back! (ehr, no!) So this board will get another uses, far far away from my lasers of course. :p

Thanks for the answers! :thanks: Yeah, that makes a lot of sense, for a laser driver it has no point to have a voltage set pot at all. It is being sold as a laser driver, here is the link if anyone is going to buy it...

Yep, two trimpots, the blue for current and the tiny for voltage, I think the idea was to be able to use it as a buck regulator with current limit. I assembled another diode, a LPC-815 and set the current to 0,4A, it powered up as usual, very bright red light, then I disabled the driver using...

Agreeded! :beer: That is hard to know, because on my test load it worked at expected, this is sad because lets a little hope that it will work again. On the past I was supplying it with 1,2A, to get maximun longevity, as I didn't knew this driver, I started with 700mA. Now a thing that came...

Yeah, that's what I did, think of a test load, usually you have diodes and a resistor, I just removed the resistor and connected my multimeter as a ampmeter, then I set the driver to 0.7A. Then, I disconnected everything and put the multimeter in voltmeter mode and measured the voltage across...

Hello! I recently disassembled my PLTB450B laser to use it on a CNC project of my course, I already got the machine up and running, but I stuggled with the laser part. I bought this driver to use with the laser, it claims that have TTL, needed for my project. I did the soldering of numerous...

That's a nice red collection, I only knew the 635nm by a LASER level that my dad have (5mW is very bright). Never had seen 685nm. Thanks for showing. :beer:

They're very fragile, if the spring that holds the lens assembly slips and touch the die or the small human hair like wires then the LD is destroyed! I killed so many LPC's that I lost the count, but I don't remember if I already killed one by dust coming in contact with the LD interior, the...

I don't even use my 1.4W 450nm, don't have time to enjoy it. :undecided:

Killed so many LPC-815 that I lost the count! Broken pin, assassin charged capacitors, too much current etc... I killed my 445 1W LD by soldering it with reversed polarities. :cryyy: So I bought another (PL TB450) and assembled a better laser than the previous one. :beer: Also killed a 405nm...

I have some experience with DVD lasers and I can help. Read all before doing something. Probably the LD you'll get is a LPC-815 that is a open can diode capable of 250mW @ 400mA. If memory don't fails, the LD of your GH22NS50 will be hard to extract, it will be glued deep into the sled that is...

Very nice job, I always liked those straight lines made by lasers, align it like you did seems very difficult without some specialized holder. Nice! The orange one is a eye candy. :beer:

I liked this. :beer: