tkBacktracer is a cross-platform interactive visualization tool to explore the tool motions in RS-274D "G-code" CNC files used in computer controlled milling and manufacturing.
AVRCNC is a CNC-Controller based on an ATMega8 and some other (cheap) hardware. Main advantages compared to L297+L298 are: - simpler to build - easier to expand - mega8 controlls motors directly - no time-critical tasks on PC