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Visitor II
Feb 23, 2026 9:42 PM UTC
Solved

Clarification Request: LSM9DS1 On-Board Sensor Fusion

Hi all, I’m confirming whether the ST LSM9DS1 provides any on-board sensor fusion output (for example quaternion/Euler), or if fusion must be done on the host MCU. If anyone has definitive guidance from ST docs/support, please share. Thanks.

Andrew Neil
Andrew NeilBest answer
Super User
Feb 27, 2026 12:39 PM UTC

As usual, all the documentation is available via the 'Documentation' tab of the Product Page:

https://www.st.com/en/mems-and-sensors/lsm9ds1.html#documentation

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.

3 replies

Peter BENSCH
ST Technical Moderator
Feb 23, 2026 10:15 PM UTC

Welcome @ra-epitome, to the community!

Please note that the device has been obsolete for some time and therefore STMicroelectronucs no longer has any documentation available. But perhaps there is still a user in the never-forgetting internet who has saved some of the data.

Regards
/Peter

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Chris21
Associate II
Feb 23, 2026 10:36 PM UTC
Andrew Neil
Andrew NeilBest answer
Super User
Feb 27, 2026 12:39 PM UTC

As usual, all the documentation is available via the 'Documentation' tab of the Product Page:

https://www.st.com/en/mems-and-sensors/lsm9ds1.html#documentation

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.