Connection (Chrome / Edge)
Power the sensor on (LED blinking), click “Connect Sensor” and pick the device whose name starts with WT (compatibility mode lists every nearby Bluetooth device — don't pick the wrong one). No OS-level pairing is needed — BLE peripherals never appear in system Bluetooth settings; that is normal. After a successful connection the LED usually changes from fast blink to slow/steady; if it keeps fast-blinking, the GATT link did not establish — most often the sensor is held by a phone app or the vendor's desktop tool.
3D Attitude (board rotates with the sensor)
Accel (g)
Gyro (°/s)
Euler (°)
Status
Acceleration (last 10 s, g)
Angular velocity (last 10 s, °/s)
Recording → CSV
Timestamps share the same clock as the pose page (performance.now) for later visual–IMU alignment. Columns: t_ms, ax, ay, az, gx, gy, gz, roll, pitch, yaw (accel in g, gyro in °/s, angles in °).
Output Rate (optional)
Factory default is 10 Hz. Measured BLE throughput tops out around 100 Hz (connection-interval limited — requesting 200 still yields 100), and changes take effect with a delay of several seconds. The frame-rate tile always shows the actual measured value.
Tips
- Verify advertising: open
chrome://bluetooth-internals/#devices— a powered-on sensor should be listed - yaw drifts: yaw relies on the magnetometer and Pilates equipment is mostly metal — for fusion work prefer gyro integration and visual heading
- Web Bluetooth is unavailable on iPad/iPhone Safari; use the sensor console from a desktop Chrome/Edge