Device Control
ButtonMatrix library for keypads directly connected to the Arduiono/ESP or via external IO
The library suports keypads directly connected to the Arduino IO or via external IO i.e. MCP23017 etc. Implementation for the Adafruit MCP23017 library is already built in and you can also easily create your own IO handler
Maintainer: Rene Richter
This library is compatible with all architectures so you should be able to use it on all the Arduino boards.
To use this library, open the Library Manager in the Arduino IDE and install it from there.