Help calibrating IMU

[J.Hernandez]

Follow up from my previous thread on trying to get true wind data, I decided to get an IMU to get heading and other data.

The first IMU I bought (IMU-9250) wouldn't be recognized by Pypilot.



I tried different cables, different breadboard. Nothing. So I returned it and got another one.

I tried it this AM and was happy to see that it was recognized as 925X.



So I proceeded to calibrate it using the instructions in the manual. I am not sure if the sphere is supposed to rotate or not but that was not happening and I was getting an error of scale out of range.



And the boat was taking a dive apparently.



I left it there and went to lunch planning to try again in the PM. When I returned I noticed that the IMU was now not being recognized.



I rebooted and it recognized it again. I got totally different yaw, pitch, roll and heading parameters from this AM and it seems like it only sent ONE set of readings and then froze and now it's not being recognized again.



Is this IMU also a bad one? Or am I missing something?