Finally got my laser working thanks to Jeff! Using the Jtech inkscape plugin I got a really nice crown etched into some wood.
I tried using image2gcode to do a rasterized image burn and I’m getting a ghosted or double image: https://imgur.com/a/oGqLZs0
I’ve read that it has to do with the burn being offset on a left to right pass vs right to left. I don’t see where to adjust that in image2gcode, is this something to do with the firmware?
Yes, I’m using the RAMBo. I had a look through that post. I think the solution is uncommenting some lines in Marlin.cpp I read somewhere that Marlin is running a check before firing the laser which delays it just enough to cause the issue when the laser is running back and forth.
Getting close. Upper right is the latest burn. I increased gamma and brightness as suggested in another thread. Seems the ghosting is gone as well.
All 4 of the burns were done using Repertier Host over usb. I just read that results nare better on SD card so I’m running the same g-code as the top right again but on an SD card. I’ll post the results right away.
Blew it back up to regular size and went with the same settings as the previous attempt. Looks like the ghosting is gone. I might have to adjust brightness and gamma a bit more but I’m definitely happy with the improvement. Thanks for your help everyone
I suspect the later versions of the firnware, with the laser pin set to 45, then using M3/M5, might be the best option. I don’t want to blow a workday for you while you are on a deadline, but that should have the latest fixes from mainline Marlin in it. Hopefully, you don’t need bugfix.