A library (driver) for matrix 4x3 or 4x4 keypad supports multi-tap and long-tap.
The library allows to interface with matrix 4x3 phone's keypad as well as matrix 4x4 keypad, supports multi-tap/long-tap states to simplify implement of customizable access to all characters (upper and lower cases), numbers and symbols.

Author: ZulNs

Maintainer: ZulNs

Read the documentation


This library is compatible with the avr architecture so you should be able to use it on the following Arduino boards:


To use this library, open the Library Manager in the Arduino IDE and install it from there.