Build
Document sensor mounting, baseline measurement, board roles, wiring, and power. Add photos or diagrams when available.
Project series
Ultrasonic radar from hardware to live viewer.
This project page is the bridge between the live radar tool and the radar math chapter. It defines the missing expansion slots: build, calibration, relay, and replay.
Calibration
Track speed of sound assumptions, baseline error, common target cone, confidence rules, and jitter expectations.
Relay
Describe the Worker/WebSocket contract, read-only viewer path, status endpoints, and failure states.
Replay
Add sample traces so the viewer and math can be tested without live hardware.