[SO-101] USB serial port keeps changing on shared classroom laptops for educators schools (beginner)
SO-101 discussion on serial ports changing across shared classroom laptops, unstable device naming, and practical guardrails for teaching setups.
A frequent SO-101 classroom setup problem appears when the robot is moved across shared laptops or different USB ports. The serial device name changes, the launch command points to the wrong port, and students lose time debugging the wrong layer.
How are you diagnosing SO-101 cases where the USB serial port keeps changing on shared classroom laptops?
Please share how you verify the correct port quickly, which checks tell you the issue is naming or host setup rather than robot hardware, and what guardrails keep students from using the wrong device path.
If you reply, include one exact port-change symptom and one exact host-side check that solved it.
The best replies explain whether the problem looked like a missing port, the wrong port, or shifting permissions.
If one device-identification step fixed the issue fast, share it. Searchers often want the quickest classroom-safe check.
It also helps to say how you made the setup repeatable across many laptops.