6 axis (BMI085) or 9 axis (BNO055) IMU - What are the advantages and are there advantages?

[Mar076]

Dear all,
for our development project (a mobile device with a camera system) we are planning to use the BNO055 (9-axis) IMU because of the sensor fusion. We are also discussing to use the BMI085 IMU (6-axis, no sensor fusion). Is the accuracy of the IMU with the 9-axis better than the 6-axis IMU? Is the accuracy difference recognizable?

Are there other important issues for choosing the BNO055 or the BMI085? I also in the datasheet that the BMI085 has less operating power supply.

The bandwidth of the BNO055 has 1000 Hz and the BMI085 from 6 to 684 Hz. Is that recognisable in the practical use (our typical use is holding a smartphone an taking a picture and so there are no fast movements of the device with the IMU)?

Thank you!

Thank you for your help! 

[Yanchao]

Hi,

Using which sensor are mostly depends on your demands.

BNO055 have accel/gyro/magnetic sensor,  could output absolute orientation with Fusion software. If you need direct Euler angle or Quaternion vector, BNO055 is suitable.

BMI088 have accel/gyro, could sync accel/gyro data.

Regarding bandwidth, do you mean gyro bandwidth?