I ordered a Laser Tree LT-80-AA 12v Kit A on Amazon (https://a.co/d/1rDPh4x) to replace an ORTUR LM2 15W. It arrived today and I’m running into an issue. I’m experiencing trails between cuts/engravings and 10% power engraves as deep as 50% which is as deep as 100%.
What is the value of S Value Max in Device Settings?
Also, confirm that you can modulate power by testing the Fire button in Move window. Does increasing/decreasing power there affect the brightness of the laser light?
As there is only one way to insert the 3 pin plug, based on those images it appears that the pin configuration is the same. Red = Power, Black = Ground, Yellow/White = VCC
The Ortur information is likely to be correct but I suggest you confirm on the Laser Tree side. I’ve seen a number of variations of the board so it’s possible that something is different than the photo on the linked site.
If you confirm that the pins are correct then I suggest you test voltage of the PWM signal coming from the controller. Confirm that it varies with power from 0-5V. If it does, then likely the laser module is defective.
Make sure you are searching for the specific model. It looks to me like Laser Tree has a ton of variations of their lasers, some with very slight differences in naming. I suspect they may also do OEM manufacturing with variations to suit customer needs.
Since my last response, I reached out to the manufacturer but never heard back and in trying to exchange the laser was told they’d only do a return, when I got my money back the price had increased $50.
Laser Tree reached out to me to try it again and offered an additional discount for my trouble. I agreed, but the new module had the exact same problem.
I stayed in communication with them and they concluded it was a faulty driver board. They sent me a new driver board which I received today, since I had to swap out the driver boards I had the chance to double-check the connections; the pins “match”. Power and Ground both match so presumably the 3rd does also. On the Ortur board it says VCC and on the Laser Tree board it says 12V.
Unfortunately, after swapping it out… nothing changed. I’ve messaged them with the latest test results which match the first. We’ll see what they say next, but now I’m wondering if it’s something to do with LightBurn after all, but I’ve no idea where to proceed from here.
Did you ever do the voltage tests on PWM and Ground leads from controller? Test voltages at 0, 50, 100% power. You should get roughly 0, 2.5, and 5V respectively. If not, something is not right.
This is easy enough to check.
Setup a test burn with 3 layers, line mode, with 0, 50, 100% power setting. Then do “Save gcode” in Laser window. Can you post results here?
I’ve misplaced my voltage meter, I’m sure it’s around somewhere, I’ll have to see if I can find it. As soon as I can find it I’ll post the results. I saved the GCode though, hopefully, this is how you meant.
Unless you can answer some of our more technical questions this isn’t going far. 13 posts and I still don’t know how it’s wired and how it supposed to be wired.
If it was working and you changed it out properly, it should work. The replacement didn’t work either, it’s more indicative you have it wired incorrectly.
That may be my confusion/misread of things. Made assumptions based on limited visibility. The Pins on the Ortur were labeled as PW[?], GN[?], and VC[?] because they had a heat sync covering the 3rd character.
The Ortur wiring was red to PW[?], black to GN[?], and white to VC[?].
The new LaserTree driver board is connected red to PWM, black to GND, and white to 12V.
It’s nice to have color wires because you can tell where they go, but you can’t depend on the color being an identifier…
Usually it red for 12V or VCC, Black/green GND and the ‘left over’ color for PWM… One of mine has this flipped over…
The cable has a ‘keyway’ on it’s outer side that allows only one way to insert it… You need to check that whatever wire goes to the PWM also goes to the laser PWM.
Plug it into the Ortur, and see which wire, VCC, GND or PWM, is what color, then follow that to your laser.
