How to fix Creality CR-Laser Falcon losing steps

TLDR; Creality CR-Laser Falcon firmware 20220720 has a bug in it, causing missing steps.

Solution: Upgrade your firmware!

I ran into an issue where my Creality CR-Laser Falcon 10W laser engraver was losing/missing/skipping steps in the y-axis. I noticed this whenever I engraved a photo, when I cut the outline it would not line up with the photo. Notice the left-edge has raw wood that wasn’t engraved.

Photo of my dog Handsome Jack engraved on birch plywood showing skipped steps
Photo of my dog Handsome Jack engraved on birch plywood.

To diagnose the problem, I made a test pattern that was simply 3 horizontal lines on top of each other, followed by a tall rectangle where the laser was off, but still moved like it was engraving a tall image. Then it engraved 3 horizontal lines next to the first set. If everything worked correctly, all sets of lines should be horizontal.

Engraved wood showing 4 sets of test lines indicating skipped steps.
Engraved wood showing 4 sets of test lines indicating skipped steps.

The Fix:

The eventual fix was to upgrade my laser’s firmware. When I received the laser in August 2022, it was using [VER:1.3a.20220720:s] (as reported when connecting to the laser via Lightburn). The 2022-07-20 version of the firmware must have a bug in it, because I updated to the [VER:1.3a.20220818:] version, and it worked!

Link to firmware download: https://www.creality.com/pages/download-cr-laser-falcon-laser-engraver?spm=..product_a487b413-a7fd-49c4-b9e0-759b90e3ab14.nav_link_store_1.1

The test lines are now right next to each other, showing it was a firmware issue, not a mechanical issue like belt tension or motor overheating. Awesome, now I can finish this review…..

Post Tagged with ,

Leave a Reply

Your email address will not be published.