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Hi Bob, Yes, I am in for 10 sets all the time since august 2019. Incl. shipping to Spain. But think about desinfection when you receive the package. Vodka can save us here as it did before - no protein can survive contact with ethanol: viruses, sober humans etc... PS: can they do other size...

I have asked about 10V TTL input because if I want to make a portable device with a driver like PhilipNZW found I would look for a driver with 24V input to get enough output power at modest currents (by boosting 12V to 85-110V and 3A not many batteries could provide input current for a decent...

What is the meaning of TTL slot on this driver? If I do not have 5V but apply 10V there - what happens? Does anyone know solderless plugs which could fit to the contacts (diameter ca. 0.4mm) of these butterfly arrays?

Very interesting thing. I have been looking for circular stage of this type (to make a kind of tank turret for one laser) but could not find any. Do they exist at all - I mean not linear but circular rotation and tilt positioners?

Hi, have you checked those? Me, too ordered one of them and checking it I see that it is just a booster from 12-24V to 24V. Not 36V at the output!

I cannot look under the lens. It may be open can crystals in holes or they may be under windows like at this old picture from 2016. The linear dimensions of the brass body are exactly the same as on datasheet here...

Finally received the Multi laser chip apparently made in China by Osram. It looks very similar to NUBM31T but unlike that one cannot be found on ebay, aliexpress nor taobao. I read that this kind of devices are called Butterfly chips. This one comes from Alibaba (I paid 240EUR for it) and was...

The question what to do with rectangular spot from some of NUBM08 and NUGM03 diodes while keping the original G-ball in place has been mentioned several times here. I remember that one LPF member managed to decollimate the beam passing through another G-ball lens (removed from elsewhere) and...

Yes, Bob and RC, you are completely right. It should be this why more expensive LD housings just keep LD in place by friction of a tap with 4 screws, and are not made for pressing into copper hole like Aixiz modules. But adding something what would adjust barrels as well - seems to difficult to...

I also think that the focusing problem here is due to diodes pressing into the DTR modules. In this way each of them is not exactly perpendicular to the surface. If they were just held with caps like in more professional square Lasertack or LSP housings (what you for sure will be using in...

I measured it now (a little out of focus not to burn the LPM sensor) and it is 4.8-4.9W in total. DTR sets the drivers to produce 1W+ with G-2 and 0.9W+ with G-8, so this looks reasonable for 5 beams. I thought about turning the driver pots to output 1.5W each module but then it would drain...

Oh, being on a truck you could easily install water cooling!

Hi Alaskan, I do not like high amperes because they are difficult to maintain over a decently long curcuit, I would prefer to have several TECs in series with not more than 3-5A running through them. Yes 570W TEC had to produce these 570W in addition to the heat you wanted to extract from your...

Yes, me too always wanted to make a focused burner like this one: but regarding how much it would consume with all NUBM44 diodes I have first tought to build a smaller similar thing with lower consuming 405nm diodes. The original idea was to try with BDR-209 single modes because of the high...

Sometimes I see talks about using TECs to cool high power lasers but no one gave here any info about numbers - TEC efficiency, consumption etc. And apparenly there is no specifc thread about TECs on LPF. So sometimes I do experiments to mesure these numbers. Just for fun but for info as well...

A litle offtop about TECs: A week ago I played with this ice cream maker...

Aaron, yes this is what I asked the happy 31T owners to do as well - check how parallel the beams are and how well focused. Without this info anything long range can not be even discused. I do not think that LPF members who bought it did this just to burn balloons what you could also do 10...

So, Bob, Have you decided to try axicon construction at end? Interesting - this is something different from what everyone is doing! BTW I have ordered one of these Astrolux MF04 torches on Ali. 130mm bezel diameter must be something - twice bigger than that of TK75! And same type of battery...

For that money I would better make a device from a NUGM03 block similar to what I have been doing starting from a NUBM44 block. It was not yet thought to be portable (just for lab use) but with proper heatsink, cylindrical correction of all beams, knife-edging and PBSing combo to get highest...

What happened? My last post here asking Styro to show the spot picture at 1 and 5m and his answer to do it have disappeared from this thread!