BNO055 ODR 2

[PB_FHBi]

Hello Bosch,

i was reading this Post as a solution: 

"The closest standalone sensor you could compare the BNO055 to would be the BMA280, BMG160 and BMM150. The performance values will differ, but you may refer to their respective datasheet for an overview of their functional description.

In particuar, you will find in BMA280's datasheet that the sampling rate of filtered acceleration data is always twice the selected bandwidth (i.e. BW = ODR/2), and in BMG160's datasheet you will find a table with the ODR corresponding to each available filter bandwidth.

Available configurations of raw sensor modes of the BNO055 are listed in chapter 3.5 of its datasheet."

But when i put the USB BNO055 Stick in ACCONLY MODE and choose 1000 Hz low pass filter, i measure an Output Data Rate about 160Hz.

The BMG160 Datasheet is not really comparable with this. On page 44 stands for a filter  BW 523Hz the ODR is 2000Hz. I was trying but i couldn't access 2000Hz Data Rate via I2C to BNO055 in ACCONLY MODE. Is the 2000Hz Sample Rate only for the internal MCU and BNO055 sends the filtered Data with a lower frequency?

Edit: Is the Filter Analog or Digital?

[o_o]

If your boards has a full breakout of all the pins, I could do a dirty hack.

Since BNO055 and BMF055 are basically the same, you can keep the MCU in reset state with the reset pin, and use the direct SPI connections to communicate with the 3 sensor ASICs at high speed to get raw data. These pins are marked as "reserved" in the BNO055 datasheet, but in the BMF055 you can see the internal schematic.

Best of luck !

[o_o]

Seems like you have a nice logic analyzer. What is the maximum speed your are able to get, considering the clock stretching ? If you could grab a logic analyzer screenshot of that test I would add it to the Q&A section for others