A stick-mounted, 6-axis IMU sampling at 208 Hz. Built around one job: capture the truth of a faceoff and report it to your phone before you're starting the next rep.
How late you react to the whistle. The number every faceoff guy is trying to cut.
First movement to full clamp. Pure mechanical speed.
How often you move before the whistle. The single discipline metric refs and coaches care about most.
Standard deviation across a session. The lower the spread, the more reliable you are under pressure.
Everything in it is there for one reason: get accurate data from your stick to your phone in the time between reps.
| Sensor | 6-axis IMU (accelerometer + gyroscope) |
| Sample rate | 208 Hz |
| Mount | Clip-on, standard men's shaft |
| Weight | — |
| Dimensions | 63 × 34 × 33 mm |
| Wireless | Bluetooth LE 5.0 |
| Range | ~30 m line-of-sight |
| Battery life | — |
| Charging | — |
| Sealing | Sweat- and rain-proof |
FaceoffEdge exists because the eye test isn't enough. Here's exactly how we get from a sound wave hitting a clip-on sensor to a coachable number in your app.
The iOS app emits a calibrated whistle waveform with a precisely-timestamped onset. The sensor doesn't hear the whistle — it knows when the phone fired it, down to the millisecond.
Reaction time ends when the sensor detects movement above a per-player calibrated noise floor, combining linear acceleration and angular velocity to ignore tremor, breathing, and bracing.
Clamp time ends at the moment the stick head reaches 90° rotation from face-off attitude — measured by integrating gyroscope data.
If meaningful movement is detected before the whistle, that rep is flagged "early" and excluded from reaction/clamp aggregates. We surface the rate separately — it's a discipline metric, not a speed metric.