I am about to choose the IMU (6 axis gyro + acc) for my project.

marek.r · ‎2018-08-08

The goal is to create the precise (and as cheap as possible) inclinometer, basing on the IMUs sensors. It should measure the angle change of the rotating wheel (speed up to 250 deg/s), with accuracy of 0.01 degree. I am not rejecting the fushion of few IMUs for getting better resluts.

I was looking for the IMUs marked as "new", i.e. LSM6DSL, LSM6DS3TR-C, LSM6DSM trying to compare them. The only noticable difference I have noticed is power consumption, DSM is designed also for optical image stabilization, and TR-C has slightly higher output noise.

I have a question for community: Which sensor should fit my expectations best?

Miroslav BATEK · ‎2018-08-10

You requirement (accuracy 0.01 degree) is impossible to achieve with MEMS gyro + acc.

marek.r · ‎2018-08-21

Basing on your experience and knowledge what's the maximum accuracy I can achieve?

Miroslav BATEK · ‎2018-08-21

With LSM6DSL and 6-point calibration you can achieve 0.2° accuracy (static measurement).

In your case (rotating wheel) I would choose different sensor (e.g. optical encoder).