BNO085 orientation IMU fusion breakout, calibration & price

BNO085 Pinout Equivalent

1：Overview of the BNO085：

The BNO085 is a nine-axis sensor module produced by Bosch, integrating various sensors and a microprocessor, with a size comparable to that of a fingernail (for example, 4×4 millimeters). It can simultaneously detect acceleration (such as the force during running or braking), angular velocity of rotation (such as the speed of turning the head or flipping the wrist), magnetic field direction (equivalent to an electronic compass, pointing to the north and south poles), and pressure/altitude (calculating altitude based on pressure changes, such as the number of floors climbed while going up stairs). Additionally, it features built-in algorithms for automatic error calibration (such as preventing the magnetometer from being disturbed by internal phone magnets), making it more accurate than ordinary sensors.

2：BNO085 Important pin function definition:

3：Alternative model recommendation

MMA8451QR1：The MMA8451QR1 is a three-axis digital-output accelerometer produced by NXP, featuring high precision measurement and low power consumption. It offers adjustable data acquisition frequency ranging from as low as 1.56Hz to as high as 800Hz, catering to various application needs. The device comes with rich integrated features and convenient interfaces. It is available in a compact 10-pin QFN package, making it easy to layout and install on different circuit boards.

QMI8658A：QMI8658A with excellent measurement accuracy, the low-noise characteristics of the accelerometer and gyroscope enable precise motion detection and attitude measurement. The accelerometer noise density is as low as 150 μg/√Hz, while the gyroscope noise density is as low as 0.006 dps/√Hz, ensuring stable and accurate data output in various complex environments.

ISM330DHCXTR：The ISM330DHCXTR is a high-precision measurement unit with excellent accuracy and low noise performance. The accelerometer noise density can be as low as 90 μg/√Hz, while the gyroscope noise density can reach as low as 0.008 dps/√Hz, enabling precise detection of minute motion changes and providing stable and reliable measurement data. It is used in industrial automation and equipment monitoring fields to detect vibrations, tilts, and motion states of equipment, facilitating fault diagnosis and performance optimization.

BMA253：The BMA253 is a three-axis accelerometer designed for consumer product applications. It measures acceleration along three mutually perpendicular axes. The output of the micro-mechanical accelerometer structure is converted based on the differential capacitance principle. The BMA253 has an extremely small package, making it suitable for use in many mobile devices.