I bought a license already because I’m pretty confident LightBurn will do what I need, but I’m running into a small issue that I’m hoping is something I missed in a configuration somewhere. I just can’t find where
I’m running a more or less commonly hacked up Franken40: K40, SKR v1.3 controller running Smoothie, power Z axis bed, air assist, etc. Everything has been running well hardware-wise so far.
My issue is with getting the expected power in the Gcode. Here’s what I’m doing, and what I’m seeing. First, I created a circle and set the Mode to Line. Set the speed to 10mm/sec, and Max Power to 50%. Next, I hit the Save GCode button to see what it created:
; LightBurn 0.9.07 ; Smoothieware device profile, absolute coords G00 G17 G40 G21 G54 G90 ; Smoothieware clustering enabledG4 P1 M3 ; Cut @ 10 mm/sec, 50% power M106 G0X17.48Y17.72 G1X16.77Y18.37S127.5F600
On the first cut move, shouldn’t that be S0.5, not S127.5? From the Smoothie docs, and from physical testing, the S parameter goes from 0.0 to 1.0 (not 0 to 255). If I put an oscilloscope on the configured pin (2.4) my duty cycle indeed goes from 0% with S0.0 to 100% with S1.0