Bed Quordinates

I have a Creality Falcon converted Ender 3.

I have 2 issues, when pressing home the bed moves all the way to the front and then tries to continue on and the whole machine rattles. How do I reverse this direction so it finds the microswitch and the rear.

I have the bed size set at 230x230, how can I adjust the bed coordinates so that the laser knows exactly where the 4 corners are

Many thanks

  1. Open the console in LightBurn or LaserGRBL.

  2. Check current configuration with $.

  3. Find $3, which controls axis direction:

    • 1 inverts X-axis (binary 00000001).
    • 2 inverts Y-axis (binary 00000010).
    • 4 inverts Z-axis (binary 00000100).
  4. To invert the Y-axis:

    • If $3=0, type $3=2 to invert only the Y-axis.
    • If $3 has another value (e.g., $3=1 for X-axis inverted), add 2 to invert Y too.
      For example, $3=1 becomes $3=3 to invert both X and Y.
  5. Send the command (e.g., $3=2) to apply the change.

You can set the work area in the laser’s profile in Lightburn.