No laser fire button CRS 355 10w UV first time of use

I have a new CRS 355 10w UV laser water cooled Lightburn 2 pro. running on windows 11.

I don’t know much about lasers. This is my first time useing lasers. I have put it all together with a bit of a strugle. I read some where that windows was better for running a laser on. So I bought a windows laptop. Now I don’t know a great deal about windows 11, I normaly use apple for everything. Now Iv’e set everything up and got it all running. Now I can’t get it to work properly; I when I try to run a test I can’t get it to burn properly the power is greyed out and set to 20%. It flies around the test area but hardly leaving a mark. I have hunted high and low on this site and others most of the topics I’ve seen are several years old, and when I follow the advice given there is nothing there.I’m new to this and of an age where things get harder to learn. (80) Sorry for the limited information but thats all I know.

Harry

Assuming it’s this machine:

One possibility: because it’s a UV laser, it will not affect most materials the same way as “ordinary” = blue-light diode / CO₂ lasers.

In particular, it won’t do much damage to wood-like materials, as it’s intended for hard-surface surface marking, so the lack of results may be due to the material.

Other folks with more experience using galvo UV lasers will have more specific advice …

  • Yes Thats the one. I have been on the site for the controler board which from what i understanding is a jjcz or some thing similar name can’t find a download for it I will go and recheck the dongle see whats going on.

All the files have chinies writing on headers. Open a folder then its all english but just as much goblygook as the chines version. I still don’t know what to do. There is a file called EZCAD Lite but what do I do with it? also every time i open a file it somehow copies itself onto the drive I’ve got as far as opening the the drive 8 times.

Going through the process in the doc for setting up a galvo laser may be helpful:

I think that’s the control program you’d use if you weren’t using LightBurn, so one installation is entirely enough. :grin:

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So i’ve estabished

crs 25510 w UV Galvo

I’ve loaded Lightburn 20.05 Pro into a Windows 11 laptop 8gb ram

On the usb dongled/ezcad-lite-2.14.15 (20210224) plug

Usb bus devices.. usb LMCV4

Mark cfg7

everything seems to run ok the laser laser will frame ok and thelaser will burn test piece great but the power button is greyed out at 20% and I can’tworkout what to do next.

Paging @Aaron.F for better suggestions … :grin:

That’s correct. UV lasers don’t have a power setting - they’re controlled by frequency and Q-pulse width only, so that’s why power is greyed out.

The Q-Pulse duration is “the time during which the energy is being released” So, a shorter Q-Pulse equals more power.

The frequency controls how often the pulses occur. That means: the fewer pulses per second, the longer each pulse charges up = more power.
Think of it like sandpaper. Low frequency is 60-grit paper, high frequency is fine-grain.


That means, you have the correct USB driver installed. :+1:

Oh, the UV will engrave and cut organic materials just fine!
UV photons at 355nm have a much higher energy than other laser sources. The energy breaks molecular bonds directly in cellulose - Material is "disassembled rather than burned.

And then it’s the usual speed / power tradeoff.

Filed under “Things I Should Have Learned by Now”, along with so many other things … :grin:

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Thanks a lot Aron and Ed

Back to the drawing board. I wondered what all those things were in LB good job I didn’t mess with them. I’l have agood root about,see what comes up.

Thanks again Harry

I’ll have to find out how to close this link now.

Not to worry: it’ll go dormant all by itself. :yawning_face:

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