Can you post the relevant snippet from the config-file that you are using?
The floating point translation originally in the BNO055 library was:
// const double scale = (1.0 / (1<<14));
// imu::Quaternion quat(scale * w, scale * x, scale * y, scale * z);
So that means a scaling factor of dividing by 16384, and it might be that some tricks should be done, as I'm not entirely sure what format the library/sensor returns the integers in...
Perhaps the easiest is to first in the config file just set the scale to 1 and the offset to 0, so you can see the integer numbers that are coming in.
Or turn on the verbosity in pydongui.py
@janklug Note: the tagging with @ should happen somewhere in the message, not in the title!