Quote from maxd on February 6, 2020, 4:12 pm

Hello, I recently set up the mini grbl controller in a k40 I just purchased. Using lightburn with it, I can't seem to get the laser power to adjust at all. When engraving an image, it seems to not skip the white parts either. I've tried adjusting my min/max power and also my power on the lcd of the k40 but still seems like its always constant consistent power.

I attached an image of what I was running some start up tests with, the image and then the results. Once I saw that it was just straight filling the whole thing in I stopped and tried again at different settings. I also attached an image of my mini grbl plugs just in case it's something with that. Hoping someone might have some better insight 🙂

A few other things I've attempted to make it work:

• Checked my lense to substrate distance
• adjusting various speeds and power on LB and Power panel
• switching from image to line and fill
• drinking a beer
• trying different woods
• various $ settings from

Thanks for taking a look!

 

Here are my $ settings:

$0=10

$1=255

$2=0

$3=1

$4=0

$5=1

$6=0

$7=0

(ATC M6, pulse/ff)

$8=100

(ATC Tool Td, milliseconds)

$9=100

(ATC M6 Td, milliseconds)

$10=1

$11=0.010

$12=0.002

$13=0

$19=0

(Softstart, milliseconds)

$20=0

$21=0

$22=1

$23=3

$24=2000.000

$25=2000.000

$26=250

$27=2.500

$28=5

(Spindle freq. 0 to 15)

$30=1000

$31=1

$32=1

$100=157.000

(x:stp/mm)

$101=157.000

(y:stp/mm)

$102=160.000

(z:stp/mm)

$103=160.000

(a:stp/mm)

$104=160.000

(b:stp/mm)

$110=12000.000

(x:mm/min)

$111=5000.000

(y:mm/min)

$112=5000.000

(z:mm/min)

$113=5000.000

(a:mm/min)

$114=5000.000

(b:mm/min)

$120=8000.000

(x:mm/s^2)

$121=3000.000

(y:mm/s^2)

$122=3000.000

(z:mm/s^2)

$123=3000.000

(a:mm/s^2)

$124=3000.000

(b:mm/s^2)

$130=320.000

(x:mm max)

$131=230.000

(y:mm max)

$132=200.000

(z:mm max)

$133=200.000

(a:mm max)

$134=200.000

(b:mm max)