LiDAR use for bed levelling

Hello engineers of Bambu Labs.

I had a thought, but maybe it’s suggested already in the past. Would it be an option to scan a highly detailed mesh data picture for bed levelling of the complete surface of the build plate with the micro lidar, vertical laser, horizontal laser and micro lidar LED? Instead of the hot end pressure point bed levelling method?

With warm regards, Ludo Timp

1 Like

Isn’t that already being done?
After probing the bed with the nozzle I see that head is scanning the whole bed (with the lidar I suppose, you see on the camera that IR led is on while it scans the surface of the build plate)?

Hi Arhimed. My printer doesn’t do that. You can enable the first layer scan. In my case I disabled that as I do that myself, with my eyes. Besides that the printhead doesn’t make a whole scan of the bed after probing. Only the extrusion lines get made and scanned. Do you have an option that I’m not aware of? :slight_smile:

interesting, I did not disable first layer scan as I’m near printer (actually some 20km from it) so I don’t mind the time for extra things but from what I observe there is a bed scanning three times, first time the bed is scanned before any filament is layed down, after the bed probing and second time bed is scanned, only partially, over the 5 lines where it tests whatever it is testing and third time it scans the bed after the first layer …

I’ll check again, maybe I was too drunk or too tired or kids were screaming too much or … when I was looking the start procedure :smiley:

This has been discussed a bit previously. Bambu does state in their marketing material that the lidar and force sensors both are used in ABL, although no technical specifics have been supplied.

Dual automated bed leveling for doubly guaranteed prints.

Bambu Lab X1 utilizes two sets of independent sensors and an algorithm to measure the height of the nozzle relative to the bed. The lidar and analog force sensors crosscheck for an extra layer of redundancy in bed leveling.