Machine & Device Control
Configure and diagnose LightBurn device connections, homing, machine origins, workspace limits and controller behavior.
GRBL Homing Cycle: $22–$27 in Context
Homing is a sequence, not a single switch: enable state, direction mask, seek speed, locate speed, debounce and pull-off must work together.
GRBL Hard Limits: $21, Switches and False Triggers
$21 makes physical limit inputs an emergency stop source; a trigger can be a real collision risk or electrical noise, so ALARM:1 needs evidence.
GRBL Soft Limits: What $20 Actually Protects
$20 soft limits prevent commanded motion beyond the configured machine travel, but only when the controller has a trustworthy position reference.
Homing, Machine Origin, Workspace and Soft Limits
Understand the coordinate chain that lets a GRBL-style machine know where it is and prevents jobs from being planned outside known travel.
Device Settings: Build a Safe Machine Baseline
Understand which LightBurn settings describe the machine rather than a single project and why controller-specific options must match hardware capability.
Console Window: When It Works and What It Is For
Understand what the LightBurn Console shows, why it is mainly for directly connected GCode lasers, and when not to expect it to work.