Grbl Mega 2560 with Backlash Compensation
Ported backlash compensation from my Talos-CNC control and added it to grbl.
You can set the amount of backlash compensation using the $ setting updates.
This will set the backlash values for X/Y/Z/A/B/C respectively:
$140=x.xx
$141=x.xx
$142=x.xx
$143=x.xx
$144=x.xx
$145=x.xx