BNO055 SIC, OFFSET & RADUIS Calibration & reuse

[Digisolve]

I did replay to an old post, but I thought it might be better to open a new post

I am using the BNO055 & wanting to reuse the calbration data.

When calibrating & reusing the calibration data which of the following register sets needs to be saved & restored on a POR?

• SIC    registers: page 0 0x43 thru 0x54
• OFFSET registers: page 0 0x55 thru 0x66
• RADUIS registers: page 0 0x67 thru 0x6A

It’s not clear in the datasheet BST-BNO055-DS000-18 rev 1.8 & not mentioned in apps note BST-BNO044-AN007 version 1.0

Also, how do I calibrate the SIC on the BNO055. Is this something I can do as the designer, or do I need to get it calibrated at a lab?

[BSTRobin · Accepted solution]

Hi Digisolve,

The SiC generated by the laboratory has better performance. After generated by the laboratory, it is written to the corresponding register, which is usually calibrated once.
After each calibration, save offset and radius, and write offset and radius after the next power on.