Question 1

What is the DIDI.BIKE Sensor?

Accepted Answer

The DIDI.BIKE Sensor is a 14-gram cycling telemetry device that mounts on any seat post. It measures aerodynamic drag coefficient (CdA), pedaling dynamics, and rider posture in real time using a 6-axis IMU at 100Hz with ±0.1° angular accuracy. It connects via ANT+ and Bluetooth LE 5.0 to Garmin, Wahoo, and Hammerhead head units, as well as Strava, TrainingPeaks, and other platforms. It costs $299.

Question 2

How does the DIDI.BIKE Sensor measure aerodynamics?

Accepted Answer

The sensor calculates real-time CdA (coefficient of drag area) by combining data from its 6-axis IMU (gyroscope and accelerometer) at 100Hz with barometric altitude readings. It monitors torso angle (0°–45° range), pelvic stability, and riding position (seated vs. standing). Optimizing position based on this data can save 15–20 watts at 40 km/h — roughly a 30-second advantage over 40 km.

Question 3

What devices and apps work with the DIDI.BIKE Sensor?

Accepted Answer

The sensor broadcasts via ANT+ and Bluetooth LE 5.0. It works with Garmin, Wahoo, and Hammerhead head units, and integrates with Strava, TrainingPeaks, WKO5, Golden Cheetah, Wahoo SYSTM, and Intervals.icu. No proprietary app is needed. A Developer API provides WebSocket streaming at 100Hz, REST endpoints, and SDK libraries for Python, JavaScript, and Java.

Question 4

What is the battery life of the DIDI.BIKE Sensor?

Accepted Answer

The sensor provides 120 hours of continuous operation on a single charge. It uses magnetic USB-C quick-charging. The operating temperature range is -20°C to 50°C. It has an IP67 dust and water resistance rating and 8MB of internal storage for offline data buffering.

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