New Control Board

LightBurn Software Questions
1

I have just received a new control board for my Chinese Diode Laser Engraver, and have encountered a few problems with it and Lightburn. Firstly when I jog the laser, the interval was set to 10mm, but it jogs 100mm…I had to set it to 1 to get it more controllable. It will not fire the laser when I do a %power test nor when I do a print. I am sure there may be a few more ‘problems’ but these are the first that I have found. I have copied my $$ settings below. I changed $32 to 1 and that worked Ok, my version of GRBL is 1.1f. Is there anything blatantly obvious that that I should change.
Many thanks in anticipation

$0=10 $1=25 $2=0 $3=2 $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=1 $100=800.000 $101=800.000 $102=800.000 $110=1000.000 $111=1000.000 $112=600.000 $120=30.000 $121=30.000 $122=30.000 $130=200.000 $131=200.000 $132=200.000 ok
2

If it’s moving 100mm instead of 10mm, these values should be reduced by 10x (80 instead of 800).

3

Many thanks for the reply… I should have put my older board settings on here as well as the newer board settings. See below

$0=10 $1=254 $2=0 $3=1 $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=1 $100=50.000 $101=50.000 $102=800.000 $110=5000.000 $111=5000.000 $112=500.000 $120=1500.000 $121=1500.000 $122=200.000 $130=2000.000 $131=2000.000 $132=200.000 ok
4

Your older board used 50, not 80, so you likely need to use that. You should also set $3 to match the old board, and $1=255 to keep your motors locked in place when not moving, and I could copy the old values from the old board to the new one from $100 and up - those are step size, speed, acceleration, and travel length values, and you’ll probably want them all to match, assuming they were right on the old system.

5

Many thanks…I will do that…my main concern is that for some reason the laser isn’t firing. I am powering the board with a 12v 5a psu, but the recommended supply is 24v 5a but that is primarily for the spindle which I am not using. I would have thought that even at 12v it would have fired albeit with lower power, but I get nothing. It is as if the command (whatever that may be) is not getting through

6

I have changed all of the settings as above, and as far as that is concerned all seems fine, the only problem I have now is the laser is not firing :slightly_frowning_face:

7

If you aren’t using the recommended voltage supply that could easily be it. Worth asking whoever makes it if it can work at lower voltages.

8

Hi, I have resolved the ‘issue’ in true Chinese fashion the Gnd and PWM connectors on the board were reversed compared to the cable. I had to swap the connectors round in the plug and now the laser is firing.
Many thanks for your help and input

9

I thoght that I had everything sorted, but, I created a 100mm x 100mm square to line up the laser head, but it is only engraves 50% ie it engraves a square 50mm x 50mm not the full size. Both the device settings and main screen settings are set at 100mm x 100mm. I have tried a couple of the GRBL settings but to no avail. Could anyone pse assist.
Many thanks in advance

10

Read here: How are steps calibrated?

11

Many thanks, I read that… and it is steps/mm. I set the settings for $100/101 to 97 instead of 50 and that gives me, as near as I can, the 100mm square that I needed.
Your help is greatly appreciated

12

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