This is due mostly to the two-layer nature of most PCBs, and turn making a homemade Arduino board an exercise in frustration and improving your vocabulary of four-letter words. After looking ...

To start the process a blank PCB board is cut to the final board size ... software sends the HPGL information to the custom written Arduino firmware, which in turn controls the stepper motors ...

Apart from understanding the Arduino's code language, one of the most confusing parts about the platform — especially for beginners — is picking the right board to use in a project.