I use C++ builder to build an application to drive the hardware.this app send X value (for example), then the micro controller convert this value to steps.
All I need is a software to convert JPG image to text file . this file must has X,Y,Z values, also I need the details about this file.
At end this is my suggesting , if there are any other solution , we can discuss .
I don't know much about this sort of thing but after a few seconds thought have decided that you also need a pen up/down control. And possibly a "change pen" (for colour change). As I understand it, JPGs are a compressed bitmap of the original. So your jpg files need to be de-compressed then manipulated to recover a single line version of the original image or if your kit is really good a grey scale representation.
Frank