Eleven of the Nano’s IO pins plus 3.3V and ground are broken out to header pins that stick out of the 3D-printed enclosure, and the dongle is powered over the USB cable.

Through some Python code and shell scripts, when scanning a card, the Pi Zero is able to trigger all the Google Home compatible devices in the house to play the album selected at the same time.

The PC tools have come a long way, especially with the use of open source libraries and the Python programming language. Now is the time to start building embedded systems using USB and Python and ...