Signal Input/Output

Arduino library for a KeyPad connected to a PCF8574.
4x4, 5x3, 6x2, 8x1 or smaller.

Author: Rob Tillaart

Maintainer: Rob Tillaart

Read the documentation


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.