The QR code brings a 404 message (@BambuLab - please fix) and the only reference I can find are two failed attempts on Reddit.
One complains about unable to use PETG ?
The instructions on the display are a bit unclear. I presume it expects two filaments in both nozzles rather than one AMS ??
Does the below message presume there’s an AMS connected to each side ?
Also what about filament, is indeed only PLA supported ?
Can’t find anything in the wiki at all.
You need 2 contrasting colors of material in the left and right nozzle. no AMS required on both nozzles. Not sure if PLA is a must, but probably yes.
What is the benefit or need of this calibration if it’s already included as part of every dual nozzle print job?
It’s more complex than the pre-print calibration, it actually prints some particular shapes for the “High-precision” offset calibration, and optically scans them to adjust the offset.
[I just tested this calibration myself on my H2D]
This is a possible explanation, as Bambu Lab has not provided any technical documentation on the matter.
The sensor can be designed to check whether the nozzle is properly aligned along both the X and Y axes. If an error is detected, the camera assists in fine-tuning the X/Y calibration. It may do this by comparing the actual printed lines to their intended positions, identifying any small misalignments. When an offset is found, the camera relays that information back to the printer, allowing it to make precise adjustments.
This is only my assumption.
