Grbl Controller is a piece of software which is used to send GCode to CNC Machines, such as a ShapeOko. As of version 3.0, the software has been optimized to send GCode to a Grbl Arduino Shield, which is the standard and default controller type for the ShapeOko.
Grbl Controller is written to work on Windows, Mac, and Linux. It has been written as a superior replacement for the popular GCodeSender, and UniversalGCodeSender.
Implements “Agressive preload” and Z-rate limiting options.
Will trim too-long lines when sending. Current version doesn't consider line-endings, so will overflow the buffer, change the Grbl Line Buffer Size in Tools | Options from 50 to 49 (48 on linefeed and carriage return systems such as Windows).
Visit the Grbl Controller home page
Installers for Mac, Windows and Linux Grbl Controller by Zapmaker
Building from Code (may be necessary for Linux)
See information here
Using Grbl Controller 3.0
- Power up Arduino and shield
- With motor off, manually position milling bit over origin (0,0) on the work piece. The origin is the intersection of X and Y on your CAD drawing.
- Start Grbl Controller
- Select COM port and open
- Choose appropriate step size (start with 1)
- Press the Z down button, the milling bit should move down towards the work piece 1 mm. The Z jog speed can be adjusted in menu Tools -> Options
- Repeat until the the bit is almost touching
- Turn on motor
- Press Grbl Controller's Reset button to zero the Arduino Grbl code
- Choose Send GCode radio button
- Open desired file, usually .nc
- Press Begin. If for some reason there is a long, slow traverse, the controller may time out. Increase timeout value in Tools -> Options
- Turn off motor when milling is complete
- Press the Reset, Stop or Close button on Grbl Controller - the steppers should stop within a second or two. If not, power off your shield