MPU-9255

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MPU-92559 axis IMU: a significant improvement over MPU-6050, featuring a 3-axis gyroscope, 3-axis accelerometer, and 3-axis magnetometer. InvenSense successfully designed this device, but it would be even better with the AsahiKasei AK09940 magnetometer's greater sensitivity despite its narrower range than the AK8963C. Sensitivity: 10 nT/LSB (typ.). Visit https://bit.ly/2WieHTz for more information. To utilize this IMU, consider the following libraries: * RTIMULib-Arduino: https://github.com/RTIMULib/RTIMULib-Arduino * MPU9255-Arduino-Library by Bill2462: https://github.com/Bill2462/MPU9255-Arduino-Library * King Tidesailing's guide to setting up the MPU-9150 9-axis device: https://kingtidesailing.blogspot.com/2015/09/how-to-setup-mpu-9150-9-axis.html According to the data sheet, the MPU-9255 is a multi-chip module consisting of two dies in a single QFN package. One die houses the 3-Axis gyroscope and accelerometer, while the other die contains the AK8963 3-Axis magnetometer from Asahi Kasei Microdevices Corporation. This makes the MPU-9255 a 9-axis MotionTracking device that combines a 3-axis gyroscope, 3-axis accelerometer, 3-axis magnetometer, and Digital Motion Processor (DMP) in a small 3x3x1mm package. The MPU-9255 features three 16-bit analog-to-digital converters for digitizing the gyroscope outputs, three 16-bit ADCs for the accelerometer outputs, and three 16-bit ADCs for the magnetometer outputs. It also includes a user-programmable gyroscope full-scale range of ±250, ±500, ±1000, and ±2000°/sec (dps), a user-programmable accelerometer full-scale range of ±2g, ±4g, ±8g, and ±16g, and a magnetometer full-scale range of ±4800μT. Other industry-leading features include programmable digital filters, a precision clock with 1% drift from -40°C to 85°C, an embedded temperature sensor, and programmable interrupts. The device features I2C and SPI serial interfaces, a VDD operating range of 2.4V to 3.6V, and a separate digital IO supply, VDDIO from 1.71V to VDD. Communication with all registers is performed using either I2C at 400kHz or SPI at 1MHz. For faster communications, the sensor and interrupt registers may be read using SPI at 20MHz. The MPU-9255 includes support for Automatic Activity Recognition (AARTM) on a wrist-worn device. It works in conjunction with the AAR library to detect walk, run, bike, stationary, and sleep. The AAR library achieves high detection accuracy and low power by using the gyro sensor in a smart duty cycle fashion. By leveraging its patented CMOS-MEMS fabrication platform, InvenSense drove the package size down to 3x3x1mm, providing a small yet high-performance, low-cost device. The MPU-9255 offers high robustness by supporting 10,000g shock reliability.