<![CDATA[Difference in IMU characterization - 42688 p on voxl]]>I was trying to understand the noise characteristics of the IMU - ICM 42688p on Modal AI M500 drone that has a VOXL board . I am trying to find the best IMU that I can use for my VIO application. I have another board with the same IMU - ICM42688p on it.

I collected stationary data for several hours on VOXL board and DK42688 board that I ordered and then plotted the allan deviation plot as shown in the figure. I am getting very different results for Allan deviation between VOXL and DK42688 board.
For comparison I also plotted Allan deviation of VN100 IMU (https://www.vectornav.com/products/detail/vn-100).

Can someone explain why the VOXL-IMU0 has more noise? Are there any settings which need to be done so that I get a similar behavior from DK42688p board?comparison_voxl_icm42688p_vn100.png

]]>https://forum.modalai.com/topic/2008/difference-in-imu-characterization-42688-p-on-voxlRSS for NodeWed, 19 Aug 2026 20:55:48 GMTTue, 28 Mar 2023 21:14:58 GMT60<![CDATA[Reply to Difference in IMU characterization - 42688 p on voxl on Wed, 29 Mar 2023 05:12:55 GMT]]>You should compare the settings as configured in the code here. We provide the code so you can fork and implement your own configuration if needed

]]>https://forum.modalai.com/post/9342https://forum.modalai.com/post/9342Wed, 29 Mar 2023 05:12:55 GMT