GRBL motion settings

Recommended GRBL parameters

Motion controller needs to know about actuator capabilities.

LSA1 pitch 0.635mm

GRBL parameter Value Definition
$101 10078.740158 Y steps/mm
$111 250.000 Y Max rate, mm/min
$121 40.000 Y Acceleration, mm/sec2
$131 90.000 Y Max travel, mm

LSA1 pitch 1.27mm

GRBL parameter Value Definition
$101 5039.37008 Y steps/mm
$111 500.000 Y Max rate, mm/min
$121 50.000 Y Acceleration, mm/sec2
$131 90.000 Y Max travel, mm

LSA1 pitch 6.35mm

GRBL parameter Value Definition
$101 1007.87402 Y steps/mm
$111 2500.000 Y Max rate, mm/min
$121 300.000 Y Acceleration, mm/sec2
$131 90.000 Y Max travel, mm

Assume motor is connected to Y axis.

Calculating steps/mm constant

Variable Value Definition
p 6.35 Lead screw pitch
s 200 Stepper motor steps per revolution
m 32 Microstepping

const = 1/(p*s*m)