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Hello friends, In this post I’ll give a detail tutorial on how we can attached Servo to GRBL CNC shield and how we can generate Z axis servo friendly G-code by using MIGRBL inkscake extension.
In this way we can build a GRBL based CNC pen plotter machine or CNC drawing machine.

GRLB is the open source firmware freely available for every one, GRBL is used as firmware for CNC machine.

GRBL CNC Shield is used as controller for CNC machine, GRBL shield and GRBL firmware is very best for 3 axis stepper CNC machine.
But 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.

Also 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.
Apart 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.

So below is the solution for how to use Z – azix servo with GRBL CNC shield”

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