I’ve change the lines in Source Code:
“if (cl.R < 0.15 * 255) { sz = 0; }”
to
sz = 255 – cl.R;
And changed the Laser power to 0-0.0096mm. See picture for result.
If I found more time, I’ll going to setup I2GC with my changes.
At this time I had made my changes “quick and dirty”.
I’ll also test the diagonal pattern.
Then I’ll solve some bugs I’ve found.
When Picture dimensions have decimal values, there will be some trouble.
If I open a picture file, the height had no decimals.
I must to click “aspect ratio” off/on then it’s ok.
See pictures.
Changelog:
-(v.6) Fixed CRLF inconsistencies, removed blank lines, allowed power min/max to include decimals. Other small bug fixes… - 2/20/16 -Bryan (Uthayne)
-(v.5) S-values to 4 decimal place for increased resolution - 2/8/16 - Leo69
-(v.4) Added origin set points and an outline at low power - 1/29/16 -Bryan (Uthayne)
-(v.3) Added profile section for commonly used settings - 1/17/16 -Bryan (Uthayne)
-Initial modification for MPCNC - 1/12/16 -Leo69
Hello everyone, first post. I was able to get through building the 25.4mm MPCNC and the $100 laser without asking any questions so congrats to the designers but I’m having a problem with image2gcode. It’s printing inverted gray scale. If I choose the option to skip white space it skips the black space. I tried inverting the image within image2gcode and it did the same thing. Just figured I’d ask before messing with it much more in case I’m just missing something simple.
Without knowing your setup (im assuming it is pretty stock as you say you followed the instructions). I would recommend following the instructions as presented by Jason here. I was having issues similar to yours prior to throwing in a few additional lines of code in the header. www.v1engineering.com/laser-engraving-mirrors/
Hopefully, this will get you on the right path. Otherwise, good work man looks like the laser is working just fine (once you figure out your slight hang up).
Neil
Sure, I haven’t started tuning things yet. These were my first burns after completing the $100 laser so everything is still mostly default.
Edit: The only thing I see in that guide that I haven’t already done is change the acceleration but I don’t really see how that could cause the application to invert the grayscale.
Wood is tricky… You will not want to run max power on wood… Try somewhere around 50% and go up or down from there… It will several attempts to get it right. And each material and sometime each image will require different settings.
Sure, I haven’t gotten to the point where I am trying to optimize quality. It is burning inverted grayscale.
Reinstall didn’t change anything. Am I using the correct build? From the first post in this topic " 3dpBurner-Image2Gcode / bin / Release / 3dpBurner Image2Gcode (MPCNC).exe "
No other ideas on my issue with the inverted grayscale? What baffles me is the optimized raster option is generating code that skips the areas that should be completely black. That has to mean it’s happening somehow on the software side right, but inverting the picture before generating the code doesn’t reverse the grayscale? I’m saving to a card and running from the LCD.
Don’t use the optimized raster I don’t think it works properly. Looks like you still have too much power. What did you set you max too? You can also lighten the image as well.
What speeds did you try?
I haven’t played with power or speeds at all yet. It is 256 fan speed @ 3000mm/m.
I will try diagonal scanning without optimization but others are using the feature aren’t they? I wonder what could be unique about my situation that could cause this problem.
