Newton’s Apple
The Newton's Apple family of sensors are lightweight, self-contained inertial measurement devices recording data over 6 degrees-of-freedom. Unlike traditional 6-DOF sensors, the Newton's Apple is powered by a built-in rechargeable battery and all data is written to onboard memory. This innovative wireless technology grants subjects a full range of motion, without requiring a tether to external data-collection hardware.
Using a suite of three gyroscopes and three accelerometers, the Newton's Apple sensors operate over any orientation and record inertial data with a dynamic range of ± 5 g and ± 300°/s. All units undergo a one-time calibration prior to shipment. During this calibration, accelerometer offsets and scale factors are determined. These calibration parameters are stored in the unit's nonvolatile memory and used to correct the sensed data as it is being collected.
Newton's Apple
The original version of the sensor. This device includes a built-in Bluetooth radio to allow streaming inertial data for real-time collection and display.
Newton's Apple 2
This device adds a three axis magnetometer to the sensor suite and includes a short range 2.4 GHz IEEE 802.15.4 radio. The radio allows the data from multiple Newton's Apple 2 sensors to be synchronized with a precise time stamp, significantly easing data analysis
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