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Ok. It appears that my brand new nubm44 is now dead and could work only in pulse mode. sad. Looking for the solution I've found this setup: 15W Laser Head Engraving Module Metal Marking Wood Cutting For Engraver +Adaptor | eBay It claims to be 8W engraving device with everything you need...

That's exactly what I used. The red light by the word "current" means that current is flowing through the wires - something is attached and working. Now the light from diode is fading after 1 second of work. Hm, how could I have burn it up even with heat sink... It was working only 20 seconds

So on this page he uses the DC power supply connected to the Driver then to Diode itself? https://sites.google.com/site/dtrlpf/home/diodes/6w-nubm44-445nm-laser-diode

So the diode was run only when put in 22mm heat sink. And no longer then 10-20 seconds. (till you could feel with your hand that it become warm) I used no driver, just the power supply unit. Hm, why is it not mentioned that this diode require substantial heat sink? What cooling system you...

Heat sink 22m https://sites.google.com/site/dtrlpf/home/22mm-510-threaded-modules Diode in 12mm Copper Module

Hi! I've just bought this NUBM44 6W+ diode from DTR shop with the g2 lens and heat sink. Tried it out a bit with voltage and ampere parameters according to the test picture. Now it seems to be that the inner lens on the diode itself has become black as if to blow. The light coming out of it...