Grayscale images are suddenly 100% filled

LightBurn Software Questions
1

I have an Ortur LM3, which I have used daily with Lightburn for more than a year to support my business.

I run v 1.5.02

This morning I cannot engrave grayscale images (I could yesterday). The laser simply does not turn on and off, so I get a square with 100% fill. The LM3 is working in all other aspects i.e for filling vector graphics and cutting. Hence I assume, it is a software issue. I have not changed firmware or did any recent changes to my hardware setup.

I have tried several of my tried old logo files etc. I have spent a couple of hours going through all relevant settings, biting my nails, as I expected, that it must have come from some accidental change of a checkmark. But I cannot detect anything changed.

I was on 1.5.01 when the issue arose. Then upgraded to 1.5.02 and rebooted, just to try. But it did not help.

I have not yet tried to convert to dither or any of the other image modes, as I am anyway lost without grayscale.

I’m at my wit’s end. And in a state of panic, which is why I’m particularly worried, that I am missing something obvious, although I am a seasoned used.

2

Can you make a small grayscale design, then go to File->Save gcode, save with .txt extension and upload here?

3

Either your GRBL device changed or firmwre changed or you have a wiring fault

Check your grbl settings for GRBL and not LPC or M3
$RST=* in console to firmware reset
Also $i press enter and copy/paste the whole thing here

Make sure, as grayscale you have min and max, your Min power is 0%

Lastly give a visutl inspection on all your wiring specially make sure your motherboard connector is fully pressed in

4

Do you have and can you use a voltmeter?

This is the most simple way to check out what’s happening.

:smile_cat:

5

Dear fellow lasier

I checked cables, plugs, firmware - everything. And yet you solved it by the remark, that grayscale images have a min and a max setting. I know that of course. But it made me wonder. Dang it if that didn’t suddenly change. My setting for the older files I tried, were suddenly min = 100%. How that could happen, I simply cannot fathom. But right now, I couldn’t care less. I can continue my work. My sincerest thanks. And now I need wine and some thoughts about early onset dementia :slight_smile:

6

The laser Gods work in mysterious ways!
i have done that myself so many times, mistakenly thinking i am changing MAX
Which is why i thought to ask

7

Did you purchase the Gremlin option? :crazy_face:

:smile_cat:

8

Well I did just have a hip replacement, and I do take morphine :slight_smile:

9

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