Eleksmaker clone, scale off, laser doesnt turn off during run

LightBurn Hardware Compatibility GRBL
1

just bought lightburn (used a lot at our local makerspace for CO2)

old eleksmaker clone (cheap, discontinued)
runs gcode
but laser does not turn off during run
a 20mm square in lightburn is about 60mm on the object
worked fine many years ago using the included benbox, but that was horrible to use

$$
$0=10
$1=25
$2=0
$3=0
$4=0
$5=0
$6=0
$10=1
$11=0.010
$12=0.002
$13=0
$20=0
$21=0
$22=0
$23=0
$24=25.000
$25=500.000
$26=250
$27=1.000
$30=1000
$31=0
$32=0
$100=250.000
$101=250.000
$102=250.000
$110=500.000
$111=500.000
$112=500.000
$120=10.000
$121=10.000
$122=10.000
$130=200.000
$131=200.000
$132=200.000
ok
$i
[VER:1.1h.20190825:]
[OPT:V,15,128]
Target buffer size found
ok

2

sorry forgot pic with example of laser not turning off, should be obvious where
(yes speed and power need adjustment too)

image
image1200Ă—1600 194 KB

3

You need to change this to 1 to turn on laser mode.

And you might need to change $100 and 101 as well (most common step setting is 80, but it depends on the hardware).

1 Like
4

80 appears to be perfect for 100 and 101

32=1 and the laser doesn’t turn on at all

32=0 turns back on, but still stays on between objects

5

Which dialect of GRBL did you select when setting up the Devices window? Screen shot your laser window and upload it.

6

laser window?
this?

image
image514Ă—280 27.1 KB

console on connection
image

device settings

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image597Ă—600 73 KB

machine settings

image
image550Ă—721 116 KB

7

Yes. I see “eleksmaker GRBL”. Did you have to import a .LBDEV file to get it working? Those control the operating characteristics of the laser. None of my lasers use those, so I have no idea how to fix one if that is the problem.

8

oh, benbox that came with the laser does not work anymore(I think there was a special setting that needs to be changed, but that was knowledge was lost years ago

lasergrbl works, but is limited
eleksCAM works but has no scaling

lightburn is acting weird
the file I was using was a path SVG that lightburn was using Line, I used a different version of the file and it used the image mode and kinda worked. it made the image, but burn was no where near as dark

9

nope, lightburn picked that for me, all I did was select the serial port, lightburn detected the rest

10

Interesting! I have Sculpfun machines, but did a manual setup because it was so simple.

Ok, another idea shot down. :joy:

$32=0 Laser stays on during traverse moves.
$32=1 Laser does not come on at all.
—Can you enter $$ in the Console window and double check you did not enter 10?

Maybe try entering 3, 4, or 5 to see what happens. This is definately a unique problem!

11

yeah, I had verified it

yeah, this is a weird one. it’ll probably be something obvious

image
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12

I hope so. It could be a bad controller board. Those are dirt cheap these days. I would buy a new board rather than trying to flash the software on an old one.

13

If you´re using a EleksMaker board did you made this change?

image
image1231Ă—599 188 KB

.
Other things to try:

  • Set $32=0, do a copy of your current Lightburn device, edit and set as GRBL-M3 retest.
  • Change the firmware to 1.1f set S-Value max = $30 = 255 and retest.
14

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