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Recommended Settings - Router
Part 5
Key GRBL Settings
$100,$101,$102 - [X,Y,Z] steps/mm
These parameters controlled the distance travelled by each axis. These values are the number of microsteps
required to move the spindle on each axis by 1mm. $100 sets the X axis, $101 the Y axis, and $102 the Z axis.
$30 and $31 – Max and Min Spindle Speed (RPM)
This sets the spindle speed range between 0.0% and 100%. Since the Mandrill has an external speed control,
these values should not require adjustment.
$32 – Laser Mode
This is a Boolean value or on/off. 1 is on (laser connected) and 0 is off (spindle connected). If you don’t have a
Laser module then just leave this set to 0. If you do wish to use the optional laser module, you will need to
set Laser Mode on (1) when using the laser module.