Best posts made by mikeisamonk

@mrsolis93
This is what I use. This is slightly different to the above code the max output is set to 1.00 as lightburn outputs from 0-1 when smoothie hardware is selected.

What laser are you using?
I had to invert and convert the ppm signal from 3.3 to 5v for my diode laser.

G00 G17 G21 G54
G90

M307 H3 A-1 C-1 D-1       ; Disable Heater output on H3
M452 P3 S1 R1.00 F2000         ; Enable Laser mode, on output 3 (heater 3), with max intensity being 1.00, and a PWM frequency of 2000
M571 P3 F200 S0

M3

Mike

I do really like lightburn it also has good support well worth the money imo, I also have a k40 with C3D (smoothie) controller which is brilliant the problem is the space inside the k40 is limited.
With the laser attached on the 1m² CNC mill I can engrave any ply I cut.

I did try all of the different firmware outputs but the smoothie option seems the closest. (Might be biased as I'm more familiar with it).

If the S2 option can't be implemented I will try writing a script to post process the gcode automatically.

Mike