Like other similar devices, the SwingTracker device is attached to the knob of the bat using a flexible strap. The device, weighing around half an ounce, contains a triaxial accelerometer and a triaxial gyroscope that sample swing data at 1600 Hz. Some basic processing of these data points is performed on an onboard DSP chip, then transmitted to an iPad or iPhone via Bluetooth. On board the mobile device, a physics engine in the Diamond Kinetics app computes metrics that describe the swing. The raw data are uploaded to a cloud server for storage and web access, allowing coaches and players to break down swings in more detail than would be possible on the mobile platform.
Read the rest at Beyond the Box Score
- Featured in Sports Analytics Blog’s weekly roundup (Dec. 11, 2014)