Filter out taps #2

New Issue

nikrozman · 2026-03-01T22:47:50+01:00

nikrozman commented

2026-03-01 22:47:50 +01:00

When tapping the device to click, the sharp acceleration spike probably feeds into the gravity-based axis decomposition and moves the cursor before the tap is recognized. The cursor shoots in the tap direction which throws the cursor off.

There's some HW based detection already going on in the built-in IMU, but I'm not using it fully, it works using interrupts. It might be useful to introduce a threshold since the tap should have much faster acceleration anyways; Compared to normal mouse movement, it appears to be at the very least 20x the normal rate, maybe we could do jerk detection - https://en.wikipedia.org/wiki/Jerk_(physics)

When tapping the device to click, the sharp acceleration spike probably feeds into the gravity-based axis decomposition and moves the cursor before the tap is recognized. The cursor shoots in the tap direction which throws the cursor off. There's some HW based detection already going on in the built-in IMU, but I'm not using it fully, it works using interrupts. It might be useful to introduce a threshold since the tap should have much faster acceleration anyways; Compared to normal mouse movement, it appears to be at the very least 20x the normal rate, maybe we could do jerk detection - https://en.wikipedia.org/wiki/Jerk_(physics)

nikrozman added this to the Software project 2026-03-01 23:18:41 +01:00

nikrozman moved this to To Do in Software on 2026-03-02 20:24:00 +01:00

nikrozman referenced this issue from a commit

2026-03-02 23:59:01 +01:00

Add samples to help with debugging #2

nikrozman added this to the v1 release milestone 2026-03-03 00:05:14 +01:00

nikrozman commented

2026-03-03 00:05:41 +01:00

https://www.st.com/en/mems-and-sensors/lsm6ds3tr-c.html

nikrozman added the help wanted label 2026-03-03 21:57:03 +01:00

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