This repository contains code trying to implement a Matrix Keypad component for gpiozero.
See also:
- https://github.com/gpiozero/gpiozero
- https://github.com/brettmclean/pad4pi/blob/develop/pad4pi/rpi_gpio.py
- https://github.com/adafruit/Adafruit_CircuitPython_MatrixKeypad/blob/main/adafruit_matrixkeypad.py
- https://sourceforge.net/p/raspberry-gpio-python/code/ci/default/tree/source/event_gpio.c
- https://learn.adafruit.com/matrix-keypad/pinouts
- gpiozero/gpiozero#358
- https://mitxela.com/projects/calkey