This is the code inside the plotter chip, which drives the hardware components (motors and servo-motor).
Move the SDFiles folder content in your SD card.
The "config" file is the default values for a A4 sheet with 190cm between motors. Edit it for an other configuration. The "drawing" file is a test sheet with simple shapes. You must name all your drawings as "drawing" to draw it.
DraWall is a vertical plotter. More informations are available here -> http://www.drawall.cc (currently in french).
This project is a work in progress. A stable release will be published soon.