// Docs

Send to machine (GRBL)

With a GRBL post (GRBL 1.1, GRBL lasers, Carbide Motion), Export G-code → Send to machine (GRBL, USB)… sends the program to the controller over its USB cable, from the browser. It needs Chrome or Edge on a desktop computer (Web Serial); other browsers export the file as usual.

How it runs

1. Connect… and pick the controller’s port (115200 baud for GRBL 1.1 unless your board says otherwise).
2. Unlock ($X) after an alarm, Home ($H) if the machine has home switches.
3. Tick the safety line (zero set, work clamped, nothing in the way, emergency stop in reach), then Start. The machine must be Idle.

The program is sent line by line: each line waits for GRBL’s ok before the next (simple send-response streaming), so the controller’s buffer never overflows. Comments and blank lines are left out.

• Pause is a feed hold (the machine stops on its path); Resume goes on from there. A tool change (M0) holds the machine too: change the tool, then Resume.
• Stop is a soft reset: GRBL stops at once. After stopping while moving, GRBL may ask for Unlock and homing.
• An error or alarm stops sending; the message shows the line it came from.

Frame

Before the job, Frame traces the extent of what will be cut or burnt: Box (the bounding rectangle) or Outline (the convex hull, the shape a rubber band would make round the job). A router lifts to the clearance height first and stays there; a laser moves with the beam off, or with a faint dot (at most 5 %, M4) so you can see it. Download frame program saves the same moves as a small file for any other sender.

Sending counts as an export. A new file goes in the air first; see Safety.