DESCRIPTION : This project demonstrates how to interface a 4x4 matrix keypad with an LCD (16x2) display using an Arduino board. The system captures key presses from the user via the keypad and ...

A keypad is one of the most commonly used input devices in microprocessor applications. In a standard keypad wired as an X-Y switch matrix, normally-open switches connect a row to a column when ...

The Keypad library is designed for driving matrix style keypads (matrix decoder) when using the Arduino platform. It uses the standard method of selecting a column and scanning all the rows to see ...