ManuelW/grbl-LPC-CoreXY
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Switched to linebuffer buffering in main branch. Updated readme

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Simen Svale Skogsrud 2010-03-04 21:39:49 +01:00
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readme.txt
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Grbl - An embedded rs274/ngc (g-code) interpreter, CNC controller, readout and exerciser for the AVR series of microcontrollers. Grbl - An embedded rs274/ngc (g-code) integrater interpreter and motion-controller for the Arduino/AVR328 microcontroller
Inspired by the Arduino GCode Interpreter by Mike Ellery
Goal: A no-compromise, high performance, low cost alternative to parallel-port based motion control for CNC milling
Status: Status:
* Runs on atmega168/arduino. * Ready for production, but probably rough around the edges still
* GCode interpreter complete * Highly optimized C utilizing the hardware-timers of the AVR-chip for all critical timing
* Linear interpolation machine control complete * Able to maintain more than 30kHz step rate, generating an ultra clean, jitter free step-signal
* Arcs and helical interpolation complete * G-code interpreter complete, tested with output from several CAM tools
* Buffered, non blocking, asynchronous stepping so the rest of the system is free to generate new steps and parse * Standards-compliant g-code arcs/circles fully supported
g-code while the steppers are still steppin' * Buffered, non blocking, asynchronous step generation so the rest of the system is free to process
* Basic serial protocol complete g-code while the steppers are steppin'
* Stepper pulses verified on scope and tested with stepper motors, motion and rates verified with simulator, * Tested on very few (two) CNC rigs
but not tested on real CNC-rig. Still waiting for my micRo kit from Lumenlab.com
Pending: Pending:
* Battle hardening in the field
* Documentation and web-site
* Simpler configuration (w/o recompilation)
* Optional support for a alphanumeric LCD readout, a joystick and a few buttons for program control * 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 * Support "headless" fabrication by buffering all code to SD-card or similar
* Smooth feed rate interpolation * Easing of feed rate
* Spindle control
Limitations: Limitations by design:
* Limited GCode-support. Focus on the kind of GCode produced by CAM tools. Leave human GCoders frustrated. * Limited GCode-support. Focus on the kind of GCode produced by CAM tools. Leave human GCoders frustrated.
* No support for tool offsets (typically handled by CAM-tool)
* No rotation axes, only x, y and z. * No rotation axes, only x, y and z.
The project was initially inspired by the Arduino GCode Interpreter by Mike Ellery