https://github.com/adafruit/circuitpython/issues/4216

https://learn.adafruit.com/customizing-usb-devices-in-circuitpython

https://stackoverflow.com/questions/48922189/receive-data-from-host-computer-using-circuit-python-on-circuit-playground-expre

Guide

https://learn.adafruit.com/circuitpython-essentials/