def Imu_callback(data):
imu_msg = Imu()
LAC_x = data.linear_acceleration_covariance[0]
print("LAC_x: ", LAC_x)
imu_msg.lac_x = LAC_x
def Imu_callback(data):
imu_msg = Imu()
LAC_x = data.linear_acceleration_covariance[0]
print("LAC_x: ", LAC_x)
imu_msg.lac_x = LAC_x