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Nope the pretection circuit only disconnects the battery if there is a shortcut between the + and - to prevent overheating and/or exploding. So you will still need a softstart circuit to not to demage your diode.

Can´t tell now how much mV but high enough to kill a mits diode even at way lower currents than most here are driving the mutsubishis. I just checked these drivers with a DSO to see why some of them were killing my mitsubishi dodes and could see the spikes. The simpliest way to add a softstart...

This is the exact same buck driver offered by DX for around $ 2-3. It might work with a Mitsubishi diode but personally I would go for a driver with a soft start build in. A simmilar buck driver already killed a few mits for me as some of them are causing little spikes when turning on. The same...

Agree on that. A little dab will not hurt to hold the lens in place once it got alligned. If you keep the module and the lens warmed up, you also will not get the lens coated with cyanoacrylate because this is like water vapor and cold mirrors. I successfully glued sensitive optics like lenses...

They are glued off centre because the beam comming out of the cristal is not absolutely in centre. So the lens is correcting this by being glued a bit off centre so the beam gets almost centered and hits the collimating lens. So nothing to worry about.

As long they are focused to infinity there is no risk but when focusing to a pinpoint you will get the housing melted. So for static focused builds there you can also use acrylic as well but I also prefer glas lenses because they can be cleaned easier and do not get scratched that easy.

But only the very good ones. I´m having here 2 watercooled at 2.3A each with G9 lenses. One is outputting 2.6W and the other one just 2.4W. However the weaker one appears to be a bit brighter. So most likely the one with just 2.4W is 445nm and the other one 450nm. About non corrected 638. The...

Re: GB: 9$ "J2" Lenses CLOSED!!! Ahh I see. I used the mail adress on their page. Thx. Will try this one when I´m at home.

Re: GB: 9$ "J2" Lenses CLOSED!!! Jim, did you get a reply from Susie already? I´m just asking as I mailed her a few days ago about my double order and their broken page I told you in the PM. But so far no reply so I´m guessing this is because of the chinese new year holidays.

According to the brightness of this luckylaser by watching their videos this is never going to be somwhere near 500mW or even 1W. Divide this by 10 any you know what you would get. So this would turn out into the most expencive 50-100mW green DPSS. So better buy one of the suggested ones. Below...

You probably mean 25% efficiency and 75% lost, which is quite normal for laserdiodes. Edit: The 75% is most likely related to the buck drivers efficiency but related to laserdiodes most of them are having about 25% efficiency. So at 7.5W total you get about 1.8W pure light energy (about 1.5W...

I assure you the post comapnies do not xray each parcel and even do not have such equipment there. To use xrays you must fullfill strong restrictions and they don´t get the permission to use such equipment. In the other hand this would also violate postal privacy. So the only ones who are using...

This is about what I mean. But rather than glueing the resistors directly on the TEC like a ring in form of an "U" I did it on a aluminum plate in form of a "S".

You solder the 10 resistors in series so they look like an "S". There you get an 100Ohm resistor in form of an "S". This one you are going to glue on the aluminum plate. The plate should be about 1-2mm thick. So 100Ohm*0,050A= 5V and 5V*0,050A=0,250W or 250mW. at 100mA you get this...

You need a small and thin aluminum plate that fits on the TEC. 10x10 Ohm SMD resistors and for example a constant current source like a LM317. You solder the SMD resistors to an "S" while making sure the buttom of this construct is totally flat and glue it on the aluminum plate by also using...

Hm, unless you got them metered elsewhere with a calibrated LPM the assumed power isn´t a good value to calibrate a DIY LPM. 1.6A in doesn´t mean you get 1.6W out. The output can be somwhere between 900mW and at best 1.6W. All depending to the efficiency of each diode, the optics and your...

I just wounder how you calibrated it. What did you use for calibration?

This is quite a lot but still worth it. Great work on this. :) In general you can build it for less than $50. Mine was around $30 but I had some parts already around like a CPU heatsink. But well mine is also without datalogging.

I´ve been working for such a company for a while some time ago. There are thousands of parcels comming through your hands hour by hour and you have no time for such things. This is simple piecework and there are always ppl around you watching you how fast you are working. The only person who...

I think you get it a bit wrong. There is no hate. At least not from my site. I also don´t think you deserve neg rep. It´s just like that. You used the fact he is a noob to get an advantage in this auction and may it be called God, higher force or Karma, you got the bill for this and some critizm...