SevIQ Radar

2-D ultrasonic • trilateration • live

two sensors • baseline 10 cm • real bearing

Range

— m

Bearing

—

Speed

—

Predicted (+0.5s) y / x

—

Confidence

—

bearing history (4s)left −90° · 0° · +90° right

LIVE target (real x,y) left range arc / prediction right range arc / DEMO

Real 2-D tracking. Two HC-SR04 sensors a known 10 cm baseline apart each measure range; their two ranges trilaterate the target's true position, bearing, velocity and trajectory — the dashed arcs cross where the object is. Computed from two Arduino UNO R4 boards and relayed live over Cloudflare. At a 10 cm baseline bearing resolution is coarse (a few degrees of jitter) and best inside a narrow forward cone; sensors need a clear common target. Override the relay with ?relay=wss://host/ws/view. Curious how two echo times become position, bearing and velocity vectors? Read the radar math chapter →