Customize Shortcuts - vlachoudis/bCNC GitHub Wiki

From Tools-> Shortcuts you have access to a list of Keyboard Keys allowed to be binded to ANY of:

• bCNC command listed in Command Line
• Gcode (like MDI commands)
• SENDHEX command to send character encoded in hex to grbl
• Python script, by preceding the command with the % symbol

For example in my setup I use some shortcuts to the run-stop buttons. In this way I have some physical button to use:

Response to command is fast, but if you need a more reliable and secure way to stop your machine consider to add some real physical buttons, GRBL is ready to accept them.