Thank you for the answer but, in fact until now in my project, I used one python code to control the stepper drivers and another to control the imu. These two codes were then imported into a main program and everything worked even though the calls to the hub were made in different files. I've had th...

I have exactly the same problem using a hub with an IMU and two stepper drivers. If I initialise my steppers first, I get an error when I initialise the IMU and vice versa. Here is my error: Local device: <STC1005 (4A Stepper Phidget) v100 -> HUB0001 Port:0 S/N:706713> open failed because device is ...