We have this IMU from AndyMark. I didn’t see any WPIlib (Java) documentation for it. Does it need an arduino or can we directly connect it to the roborio?
We have not used that physical packaging. However, it looks like your unit contains an ITG-3200 gyro. We did connect an ITG-3200 gyro directly to our roboRIO in 2015. The following link it to the Java package containing the code we used to interface with it (you will probably need the GyroAdapter as well as the ITG3200).
Hope that helps.