Were having some issues with our laser machine bogging down on dark sections of dithered engravings. Trying to track down where the issues lie
Using an MKS Sbase with a custom compiled GRBL-LPC. The changes we needed were mostly to regarding the limit pins and having the stepper pins configured to open drain. This is connected to a dedicated rotary machine with a 100W Co2 laser. The steppers are an integrated driver style
I have played around with the microstepping settings with anywhere from 2.222 steps per deg to 150+ on the A axis. At the higher rates I seem to stall the motor but even at the lower steps the laser still slows down.
I suspect maybe in our Gcode that there is a high density of dots in the dark areas.
On the firmware or Sbase end, Can increasing the baudrate help improve performance? Lowering the laser PWM frequency?