New to CNC machines, have some questions.

Hello all,

I am new to CNC machines. I have some trouble understanding some parts of how they work.
I have been doing some research, but some things are not clear to me.
My goal is to control a laser cutting machine from an embedded system.

From what I understand, I can let my embedded system generate G-code and then it can be interpreted by a CNC controller like LinuxCNC.
My first question is if this is correct.

My second question is how the G-code is read by CNC controllers. Is this by reading a 'G-code file' or can the G-codes be 'pushed' to a controller, so I would not need an interface for the controller, but only for my embedded system.

I hope you can help me clear things up.

I have a general question.

My DIY machine is 99% complete now. I have used FreeCad to design my first proto-types which will actually just small improvements to make my machine more rigid. Hopefully someone else out there has or is familiar with freecad.

so my question is how do i get linuxcnc to use the freecad file, and generate g-code for my millining machine.

I do also have blender installed but not yet spent any time familiarizing with it.

Do I need to import this freecad file to blender? Or can i Just import directly from linuxcnc using HAL components?

any input would be great.

Thank you for the response BigJohnT...

I guess i kind of formulated my question wrong.

How do I convert my cad file to usable G-code for my machine? May have been a better question.

CAM programs do what you want.
If your parts are simple, hand written is also a good method.

I hope this file attached correctly.

its not exactly a complex design.

after I finish upgrades on the machine I will probably purchase V-carve which from what I understand is an all in one program that suites my needs for this hobby machine.

The PDF is from "myDIYCNC" construction manual. behind it is my rendering of the part that I want to make in freecad.

As I understand it BlenderCam can convert to G-code for linuxcnc. Is That correct?

Again Thank you all for your helpful input, This has been a great learning experience for me and I cant wait to apply this to my wood working hobbies.