GCODE command to home Ray

[CameronM]

I am writing a slicer integration for the ray and need to establish an Origin using the home command. When I run the G28 command, nothing happens and it does not home or move in any way. The behavior I would expect is for the machine to home in the same way that “Go Home” does in Luban (top left corner).

How can I achieve this?

Thank you in advance.

[Skreelink]

The Ray uses GRBL instead of Marlin, so G28 won’t work. Try using $H

[CameronM]

Thank you!