Hi Arduino community! I've been working on an outdoor autonomous navigation cart project (Arduino Mega-based) and hit a persistent issue: my IR distance sensors give erratic readings under strong sunlight, causing frequent collision avoidance failures. Physical shading and software filtering helped marginally, but the problem persists.
Research suggests laser sensors handle ambient light interference better, but I'm struggling with three trade-offs during selection:
- Precision vs Refresh Rate: High-accuracy models (e.g., Time-of-Flight/ToF types) often sacrifice update speed for mobile applications
- Low-Power Constraints: Battery-powered devices require standby current <5mA
- Interface Compatibility: Preference for I2C with 3.3V/5V tolerance
Tested a VL53L0X module (not endorsing) – works well within 3m but fails beyond. Would appreciate insights on:
- Any reliable mid-range (5-10m) solutions that withstand direct sunlight?
- What industrial AGVs use to combat environmental light interference?
Any experiences to share regarding:
Hardware filtering techniques for SNR improvement
Real-time calibration in dynamic environments
Cost-effective mid-range alternatives
3 posts - 3 participants