I am currently struggling because my Raspberry Pi is unable to connect to the webcam. Running
lsusb never shows anything (keeps loading) and
v4l2-ctl --list-devices says
Cannot open device /dev/video0, exiting.
The connected cord is not the stock one although it outputs 5&nsp;V & 2.5 A. I heard you should use a USB hub although I don't want to spend another $20 on one (if possible).
What could be the issue?