Power the System

You can power the system via the Feather's USB-C port or through a LiPo battery.

Attach the USB Keyboard

Plug a USB keyboard into the USB-A port of the USB Host FeatherWing. The keyboard's USB Vendor ID and Product ID will be displayed.

When the keyboard is unplugged, a message will appear to let you know :)

You can plug in a different keyboard and continue testing. Note the different VID and PID.

View Keycodes

Once the setup is running, press keys on the USB keyboard. The corresponding keycodes will be displayed on the TFT screen in hexadecimal format.

Troubleshooting

If the keyboard is plugged in but doesn't appear to connect, press the Rest button on the Feather (or FeatherWing, they're the same pin).

Some keyboards with integrated USB hubs won't show up properly, such as the official Raspberry Pi keyboard, for this reason.