Who can help me write code for a 3D printer

Question

3D printer

Answer 1

You want to write the raw code? I assume you are not just printing something? Or else you would use a program like Repitire Host to generate the code for you?

Answer 2

There is an existing library, called marlin.

Git: https://github.com/MarlinFirmware/Marlin

Answer 3

you may want to look also at grbl