ICM-42688-P data abnormal #75

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MrUnknownDE · 2026-04-05T17:51:48+02:00

MrUnknownDE commented

2026-04-05 17:51:48 +02:00

Originally created by @c0n57 on 5/16/2025

Using SlimeVR-Server 0.14.1, Windows 10 Desktop
Using SlimeVR-Tracker-ESP ~~0.5.4~~ main, downloaded May 2nd.
Using ESP-12F + ICM-42688-P(I428 for short), chip silk printing I428P B23AA1 2434 (year 2024, week 34)

I' m using my own designed PCB, and it works well with BMI270. But if I use I428 instead, the data just jumps irregularly and speedy. The rotation X/Z jumps between +-180, Y between +-100. Also I find that the ~~tempreture omg what did i type yesterday~~temperature, Temp. C line in the server, is relatively close to 0 (or say, between +-10) when the tracker is static. If I shake the tracker rapidly, the rotation data jumps as usual, but the temperature data reaches a huge number like -5400 or +2000. If my PCB contains any problem please figure them out. Or, I think the data processing for I428 may contain error, furthermore the ICM45686 may contain the same problem.

*Originally created by @c0n57 on 5/16/2025* Using SlimeVR-Server 0.14.1, Windows 10 Desktop Using SlimeVR-Tracker-ESP ~~0.5.4~~ main, downloaded May 2nd. Using ESP-12F + ICM-42688-P(I428 for short), chip silk printing I428P B23AA1 2434 (year 2024, week 34) I' m using my own designed PCB, and it works well with BMI270. But if I use I428 instead, the data just jumps irregularly and speedy. The rotation X/Z jumps between +-180, Y between +-100. **Also I find that the ~~tempreture omg what did i type yesterday~~temperature, Temp. C line in the server, is relatively close to 0 (or say, between +-10) when the tracker is static. If I shake the tracker rapidly, the rotation data jumps as usual, but the temperature data reaches a huge number like -5400 or +2000.** If my PCB contains any problem please figure them out. Or, I think the data processing for I428 may contain error, furthermore the ICM45686 may contain the same problem. ![Image](https://github.com/user-attachments/assets/a2169855-f5f0-4a50-b6de-677237cac967)

MrUnknownDE closed this issue

2026-04-05 17:51:48 +02:00

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Reference: github/SlimeVR-Tracker-ESP#75