i figured out, that it is possible to get values from “rostopic echo /mpu9250”. But its just possible on the CORE2.
On my Master Machine i havent built does messages, i thing this is the problem why i can´t see them there.
Problem with the messages i get is, that the values don´t change. I also run the mpu on an Raspi and it worked so it´s not damaged or something like that. This is the output i get from /mpu9250:
angular_velocity: [3.8641001828798896e-34, 3.864103856299736e-34, 3.864107529719582e-34]
linear_acceleration: [0.0, 0.0, 0.0]