@jayls5 Niceee, I thought violet lasers didnt have a bright beam, like red lasers since they are on the edge of what the eye can see. But violet is still a lot brighter than red! I cant wait till I get a working PHR
No. I avoid looking at it when it's focused for burning, but shooting it a good distance in infinite focus isn't too bad. In either case, it's not going to blind you. (Think about using a magnifying glass as a kid anyway, that's many watts of focused energy that didn't blind us)
The nice thing about this color is the fact you don't really need expensive laser goggles. Standard sun-glasses filter this light if you're worried about it.
@blueblade50 Only 445nm lasers can do that. The 445nm wavelength is particularly damaging to your retina, as it bleaches photoreceptors instantly and permanently. If you just look at the dot of a 1W 445nm from within 30 feet, you will cause permanent damage to your eyes.
It seems you have the same that me, the housing looks the same, i did the lm317 circuit and works very well, i calibrated the current with the ampmeter to 110ma and keeps cool, just heat when you have it long time On.
It's 12.4v input to the driver, which is at the upper limit of the circuit I am told. It would have been less had my NiMH batteries been rated accurately. In theory, it's not supposed to increase diode output with the current limiting circuit (though I'm curious about what it does in practice). I didn't build this particular driver, as I've grown tired of microcircuit building. My friend and I built most of the drivers in my other videos. I was told this driver is 130mA but I can't confirm.
It's some fixed current driver with tiny surface mount components. I believe it was made by Rckstr. He has a video of one of his being made on youtube, "gi0kmQCN8Vg". My friend designed similar style pre-fabbed boards, but we got lazy and stopped making them.
No worries. Thanks for your replies. It's a shame you and your friend stopped building those drivers... seems to be quite a lucrative business at the moment. I do have the rkcstr schematic and I'm eager to try building some... however, there are some newer drivers on the market (from Germany) that provide soft-start current ramp-up and down to increase laser diode longevity. Thanks for posting your vids. Cheers :)
did you fog your room? thats a BRIGHT beam!
juniortore1 1 year ago
@juniortore1
No fog used. The 120 mW came from a 9V battery. I later found out that this setup with the AAA's did 160-180mW on average.
jayls5 1 year ago
@jayls5 Niceee, I thought violet lasers didnt have a bright beam, like red lasers since they are on the edge of what the eye can see. But violet is still a lot brighter than red! I cant wait till I get a working PHR
juniortore1 1 year ago
my freind picked up my laser thinking it was a cheap 2 dollar one u buy at walmart and he put a 400mw laser on my back ouuuch@@@
trezzpazzerz 1 year ago
If you look at the laser do you go blind? im not talking about pointing it in your eyes, just looking at it
blueblade50 2 years ago
No. I avoid looking at it when it's focused for burning, but shooting it a good distance in infinite focus isn't too bad. In either case, it's not going to blind you. (Think about using a magnifying glass as a kid anyway, that's many watts of focused energy that didn't blind us)
The nice thing about this color is the fact you don't really need expensive laser goggles. Standard sun-glasses filter this light if you're worried about it.
jayls5 2 years ago
@blueblade50 Only 445nm lasers can do that. The 445nm wavelength is particularly damaging to your retina, as it bleaches photoreceptors instantly and permanently. If you just look at the dot of a 1W 445nm from within 30 feet, you will cause permanent damage to your eyes.
Supermassively 1 year ago
HI,
Are you driveing it at 130mA?
It seems you have the same that me, the housing looks the same, i did the lm317 circuit and works very well, i calibrated the current with the ampmeter to 110ma and keeps cool, just heat when you have it long time On.
Does yours need heatsink at 130mA?
CxC2007 2 years ago
This one isn't my driver, but I don't think it uses the lm317.
jayls5 2 years ago
Wait..... 12.4 volts in?? To the LD or pulse driver? I thought these diodes were only 5.5 volts CW at absolute max. What's your current at?
likmahchoda 3 years ago
It's 12.4v input to the driver, which is at the upper limit of the circuit I am told. It would have been less had my NiMH batteries been rated accurately. In theory, it's not supposed to increase diode output with the current limiting circuit (though I'm curious about what it does in practice). I didn't build this particular driver, as I've grown tired of microcircuit building. My friend and I built most of the drivers in my other videos. I was told this driver is 130mA but I can't confirm.
jayls5 3 years ago
I did a quick test on that coherent meter you commented on in my other video, and it output 127mW on a fresh 9V battery.
jayls5 3 years ago
Nice output! What kind of driver is it?
likmahchoda 2 years ago
It's some fixed current driver with tiny surface mount components. I believe it was made by Rckstr. He has a video of one of his being made on youtube, "gi0kmQCN8Vg". My friend designed similar style pre-fabbed boards, but we got lazy and stopped making them.
jayls5 2 years ago
That link is for THIS vid! ;)
likmahchoda 2 years ago
My mistake. Now I can't find it, go figure.
jayls5 2 years ago
No worries. Thanks for your replies. It's a shame you and your friend stopped building those drivers... seems to be quite a lucrative business at the moment. I do have the rkcstr schematic and I'm eager to try building some... however, there are some newer drivers on the market (from Germany) that provide soft-start current ramp-up and down to increase laser diode longevity. Thanks for posting your vids. Cheers :)
likmahchoda 2 years ago
maybe you can sell your friends tattans. tattoo-tans.
reenerbeaner6 3 years ago
OMG this LASER is the real shit! it can TAN you!
doctorshaff02 3 years ago