As the Laser head has a fixed focus I’m looking into options for a motorized Z-axis with touch probe. I came across this Thingiverse item, which uses the BL touch sensor.
The Sculpfun uses an XY DLC v1.0 controller board, which has both connectors for a Z motor as well as a probe:
Likely the only chance of this working is if you could get the BL touch to work like a traditional homing switch for the Z. In that case, assuming that Sculpfun has enabled Z homing in their firmware then you have a chance this could be made to work.
LightBurn really wouldn’t be involved in the process. The controller would handle the homing and report back coordinates to LightBurn.
Wouldn’t Z probing through homing require that the material/object to be cut/engraved is located at position XY 0,0? That’s not necessarily always the case.
Once homed, you can use material thickness properties to account for material thickness. It’s a function of the material library or as a one-off in cut settings.