Docs for the Feather RP2040 USB Host variant

README.md

@@ -18,7 +18,9 @@ There's also a [Bluetooth](BLUETOOTH.md) version that runs on nRF52840-based boa
 
 ## How to make the device
 
-There are two main ways of making the HID Remapper. You can either make it yourself using a Raspberry Pi Pico (or two), or you can use the provided files to manufacture a custom board at JLCPCB or a similar service. Their functionality is the same.
+There are three main ways of making the HID Remapper. You can either buy [this board](https://www.adafruit.com/product/5723) from Adafruit, make it yourself using a Raspberry Pi Pico (or two), or you can use the provided files to manufacture a custom board at JLCPCB or a similar service. The functionality is the same in all cases.
+
+If you get the Feather RP2040 USB Host board from Adafruit, the device is ready to use, you just need to flash it with the right firmware ([remapper\_feather.uf2](https://github.com/jfedor2/hid-remapper/releases/latest/download/remapper_feather.uf2)). Hold the "Boot" button on the board, then press the "Reset" button. A USB drive should show up on your computer. Copy the UF2 file to that drive. That's it.
 
 See [here](HARDWARE.md) for details on how to make the Pico variants of the device and [here](custom-boards/) for details on the custom board option.