IMU lab

Overlay compares the same channels across pods. Each pod color marks its traces. Software sync estimates clock offset for CSV timestamps; it is not sample-level IMU sync.

Cube attitude from on-device Mahony (gyro + accel + mag yaw correction).

HYROX mode is a training assistant: it estimates work/rest, motion intensity, and candidate repetitions from IMU motion. It does not claim exact running distance or official race timing.

Connect a pod and choose a station.

Calibrate the magnetometer in the assembled enclosure first: slow figure-8 and tumble through nose/tail/side-down (not flat table spins). Logging uses 448 Hz for one pod and 112 Hz for two or more (prefers max rate over zero-loss) and brackets motion with two-second stationary bias intervals. Start runs a transport preflight; stop waits for a device drain-complete barrier. The CSV stores on-device Mahony quaternions plus the accel and mag the filter used.

Connected endurance logger: records pack voltage, percentage, connection state, actual rate, gaps, and outliers for every pod. Keep this browser tab visible; a hidden browser can delay scheduled samples. This measures runtime behavior, not battery capacity in mAh.