BMF055 vs BNO055

[kxco]

Hello, can someone please summarize the differences between BNO055 and BMF055.

Thanks.

[elrhoul]

Hi,

There are differences on the features/performances, outputs and ODR (output data rate), tables below summarize some of the differences, you can also refer to the BSX lite integration guide, part of the BSXlite package available on our website for more information:

Key Features	BSXlite	BSX (full library) in BHI / BNO
Axis remapping	×	Yes
Offset correction	Yes	Yes
Soft Iron Correction	×	Yes
Accelerometer calibration	Yes	Yes
Magnetometer calibration	Classic: figure-of-eight	classic and advanced (fast)
Magnetic distortion check	Basic	Advanced
Gyroscope calibration	Yes	Yes
9-axis orientation	Basic	Advanced
Compass orientation	Basic	Advanced (adaptive filtering)
Data fusion modes	9-axis	9-axis & 6-axis (IMU, M4G, eCompass)

Outputs	BSXlite	BSX (full library) in BHI / BNO
Virtual gyroscope (M4G)	×	Yes
Quaternions	Yes	Yes
Orientation	Yes (unfiltered)	Yes
Rotation matrix	×	Yes
Heading accuracy	Yes	Yes
Linear acceleration	x	Yes
Gravity	×	Yes
Gestures	×	Yes
Step counter	Yes (from BMI160 HW)	Yes
Significant motion	Yes (from BMI160 HW)	Yes

ODR	BSXLite	BSX-Full
Accelerometer	100Hz	Multiple & Dynamic
Magnetometer	25Hz	Multiple & Dynamic
Gyroscope	100Hz	Multiple & Dynamic

[kxco]

Thank you for the tables, that is very helpful.  

"ODR - BSXLite - accelerometer = 100Hz"

Does that mean the fastest I can sample with BSXLite is 100Hz?  How fast can BSX sample?

The datasheet for BMF055 is not very clear on how many samples per second I can read.  The only mention of 'Hz' I could find related to the accelerometer was filter bandwidth up to 1000Hz. 

[kxco]

It seems very strange how hard it is to find the sample rates.  It should be on front page of datasheet and flyer. 

Where do I find the sample rates?

[elrhoul]

Dear kxco

as mentionned in the table the Max ODR for BSXLite is 100 Hz, For BSX3 (version part of BNO055) the max ODR is 200Hz 

The ODR for raw sensor data (e.g accelerometers ) and BSX are not necessary to be the same. BSX may have a lower data rate than the raw sensor.

A customer developed application gets the fused BSX output at a consistent data rate, even though the individual sensors may be configured at different data rates.

Best regards