CircuitPython Keypad

This project simplifies the creation of custom USB HID keyboards.

Hardware requirements

A microcontroller board compatible with CircuitPython.
Hardware buttons or any electrical component that can close and open an electrical connection.
Some wires and connectors to connect the buttons to the board.

Download CircuitPython 7.x and flash it to your board (CircuitPython versions higher than 7.x may also work, but compatibility is not guaranteed). Your board will now appear as a USB mass storage device called CIRCUITPY volume.
Download the Adafruit CircuitPython library bundle compatible with your CircuitPython version, extract it and copy the adafruit_hid, asyncio and adafruit_ticks modules into the lib folder of the CIRCUITPY volume.
Copy the .py files form this folder onto the CIRCUITPY volume.
Customize the config.py file according to your board and needs, e.g. assign your board's GPIO pins to keystrokes.

The device outputs diagnostic messages to the serial console offered by your board.

Developed by Christian Stussak for IMAGINARY gGmbH.

Licensed under the MIT license (see the LICENSE file).