This repository explores the interfacing of 4x4 keypad with an Arduino, but without using any built-in headers. The goal is to completely learn the interfacing mechanism from scratch. The code is ...

To understand the serial communication in Arduino. To interface keypad with Arduino and send data serially to a serial pin. Theory: - Keypad: - A keypad is one of the most commonly used input devices ...

Arduino 42-Digit SPI Keypad Matrix (video) 1:01 pm April 19, 2017 By Julian Horsey. Arduino enthusiasts or those looking to learn more about programming with Arduino and electronics-in-general may ...