The Laser version of the grbl firmware needs to be installed.
- Once the board is flashed, enable Laser mode in firmware
$32=1
- Create a new Lightburn Device called 'Laser'
- In Device Settings -> Set S-Value Max = 1000
The Pen-Lift version of the grbl firmware needs to be installed.
- Once the board is flashed, disable laser mode
$32=0
- If laser mode is enabled, it won't trigger a pen lift between white space and mess up your awesome drawing!
- Pen-Lift GRBL version supports M3/M4/M5[http://linuxcnc.org/docs/html/gcode/m-code.html#mcode:m3-m4-m5] spindle control
- The servo position will be proportional to the power setting used. For example (assuming
$30=1000
in grbl config):M3 S0
orM5
is servo at "neutral" positionM3 S500
is half extendedM3 S1000
is full extension as defined byRC_SERVO_LONG
inspindle_control.c
- Created a new Device in Lightburn called "Pen Plotter"
- Controller type 'GRBL-M3 (1.1e or later)'
- In Device Settings, Set S-Value Max = 1000
I had to invert the Servo direction in grbl config.h