CXOF inherits the PMW3901 physical limits — see PMW3901 limits for the full breakdown. Key constraints recap:
- Minimum altitude: 8 cm (below this, the optical focus is lost).
- Maximum altitude: ~3-4 m indoor; up to 30 m outdoor with high contrast.
- Floor contrast critical: plain laminate / glossy floors cause drift.
- Illumination ≥ 60 lux: dark scenes accumulate noise.
CXOF-specific notes
- The Holybro module includes a glass lens cover that protects the optics — handle with care; scratches degrade performance.
- The UART output rate is fixed at the ArduPilot protocol cadence (10 Hz by default); you can’t easily push it higher.
Where to go next
- PMW3901 limits — underlying physical constraints
- Setup
- CXOF hub