Grbl - An embedded rs274/ngc (g-code) interpreter, CNC controller, readout and exerciser for the AVR series of microcontrollers. Inspired by the Arduino GCode Interpreter by Mike Ellery Status: * Linear interpolation machine control complete (Arc support in embryonic state) * Buffered, non blocking, asynchronous stepping so the rest of the system is free to generate new steps and parse g-code while the steppers are still steppin' * GCode interpreter complete * Basic serial protocol complete * As of yet completely untested in a real environemnt. Still waiting for my micRo kit from Lumenlab.com Goals: * Runs on the atmega168 * Runs on a standard Arduino * Suitable for both milling and deposition fabrication (e.g. RepRap) * Support GCode from common free and cheap CAM-packages right out of the box * Optional support for a alphanumeric LCD readout, a joystick and a few buttons for program control * Optional support for automated cutter length calibration when milling * Support "headless" fabrication by buffering all code to SD-card or similar Limitations: * Limited GCode-support. Focus on the kind of GCode produced by CAM tools. Leave human GCoders frustrated. * No rotation axes, only x, y and z.