- After first setup
- After major OS updates that include depth changes
- Any time depth readings appear unstable
1) Prepare the calibration board
Download and print:
- Print at 100% scale (no fit-to-page scaling)
- Mount it flat on a letter-sized cardboard backing
- Do not cover checker squares or markers
- Flatness matters more than perfect edge trimming
2) Start calibration from the app
Go to Configuration -> Depth and tap Start calibration
Use the Configuration tab, open Depth, then start calibration.



3) Let calibration complete
- Stay clear while MARS runs the sequence
- Wait for completion status in the app
- If it fails, repeat with better board flatness and stability

