fengjunzhe

No USB device found

1

when I started step 1； **pi@raspberrypi:~ $ sudo pip install pyusb** Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple Requirement already satisfied: pyusb in /usr/local/lib/python3.7/dist-packages (1.0.2) **pi@raspberrypi:~ $ sudo python pixel_ring.py** No USB...