Calibration LSM303 DLHC Magnetometer

[ABogd.1]

Dear friends, help me please solve the problem that I encountered during the calibration of the LSM303 DLHC magnetometer. I use the technical documentation stm32 AN3192 for calibration. After rotation of the sensor along each axis and data collection, correction factors for displacement and normalization are calculated. Given these coefficients, I should get a normalized sphere with a radius of 1. However, this does not happen. After that, I separately display the calculated values ​​of the calibration coefficients. Can elements A, B, C be negative values?

Tell me what can be caused by their negative values?

[Eleon BORLINI · Accepted solution]

Hi @ABogd.1​ , they should not be negative because they define a sphere in space. Can you share the data you acquired? Did you already check the Motion MC library code of the X-CUBE-MEMS1 function pack, for the magnetometer calibration? Regards

[ABogd.1]

Thank you very much for having promptly withdrawn my question. In the file, data taken from the sensor during rotation along each axis. It is from these data that I make the calculations.

I did not understand the application for magnetometer calibration, so I want to have an autonomous system with density.

[ABogd.1]

Thank you very much for having promptly withdrawn my question. In the file, data taken from the sensor during rotation along each axis. It is from these data that I make the calculations.

I did not understand the application for magnetometer calibration, so I want to have an autonomous system with density.