The recommended power-on sequence is to first apply VDD (1.71V to 3.6V) and then apply VLOGIC (1.71V to 3.6V). The power-on sequence is critical to ensure proper operation of the device.
The BNO055 can be configured using the Bosch Sensortec API or by using the BNO055 Arduino library. The API provides a set of functions to configure the sensor, set the operating mode, and read the sensor data. The Arduino library provides a simpler interface to configure and read the sensor data.
NDOF (Nine Degrees of Freedom) mode uses data from all sensors (accelerometer, gyroscope, and magnetometer) to provide a 3D orientation vector. IMU (Inertial Measurement Unit) mode only uses data from the accelerometer and gyroscope to provide a 3D acceleration and angular rate vector. NDOF mode is more accurate but requires more processing power and power consumption.
The BNO055's magnetometer requires calibration to compensate for hard and soft iron effects. Calibration involves rotating the sensor in a figure-eight pattern to capture the magnetic field data. The calibration data is then stored in the sensor's EEPROM.
The BNO055's latency is approximately 2-3 ms. This latency can affect applications that require real-time data, such as robotics or gaming. To minimize the impact of latency, it's recommended to use a high-speed interface (e.g., SPI) and optimize the sensor's configuration for low latency.
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BNO055 Overview
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