Looking for ST MEMS & motion sensors for project

[venticity348]

Hello, I was told by the services to check out the forum for guidance.

I am working on a project that requires surface reconstruction using non-optical based solutions. I was thinking of attaching a motion sensor module to track the handheld scanner which will be moving along the surface, and then using the obtained sensor data to plot the point cloud in 3D.

Is this a feasible idea using the motion sensors for accurate tracking & reconstruction? If so, what are the recommended products (something like LSM6DSV)? How is the development experience using MEMS-Studio?

Thank you!

[Federica Bossi]

Hi @venticity348 ,

The LSM6DSV family is a good choice.

However, at the moment, performing 3D reconstruction with MEMS Studio is challenging.  Which evaluation board do you want to use?

[venticity348]

Hi, I was thinking of using STEVAL-MKI109D for evaluation board but please let me know if there are better alternatives.

[Federica Bossi]

Hi @venticity348 ,

You can use STEVAL-MKI109D and MEMS Studio to acquire short segments of motion data with an ST IMU (e.g. LSM6DSV family) while you move the handheld scanner along the surface.

A typical workflow could be:

1. Use MEMS Studio to record small motion sequences (short paths on the surface) with a suitable ODR and full scale.
2. Export the data and use your own code (e.g. in Python/C++) to:
   • integrate the IMU data,
   • reconstruct the local trajectory,
   • and build a 3D point cloud for each segment.
3. Finally, you can merge/stitch these partial point clouds in your own processing pipeline (applying your own alignment, drift compensation, etc.).