GRBL CNC Shield is used as controller for CNC machine, GRBL shield and GRBL firmware is very best for 3 axis stepper CNC machine.īut when we choose GRBL to build 2.5 axis CNC machines like pen plotter or CNC drawing machine we face a problem that there is not any provision to connect Servo to GRBL CNC shield.Īlso default GRBL firmware also not have any facility to control servo motor for Z axis, but we have a hack version of GRBL version which support servo control.Īpart from all of this we also need one software which can convert our design into Z axis servo friendly G-code, For this we have a tool called MIGRBL INKSCAPE EXTENTION. GRLB is the open source firmware freely available for every one, GRBL is used as firmware for CNC machine.
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