In this Tutorial video, I'm going to be showing you how to connect a 4x4 keypad to a single Arduino analogue input. A 4x4 keypad is a really useful Arduino project component, particularly for security access projects or projects requiring code inputs. These keypads typically require 8 IO pins in order to function. This tutorial only uses one, enabling you to free up more of your IO for sensors, displays, motors and servos and allowing you to build more complex projects. Written Tutorial With Code & Circuits - https://www.the-diy-life.com/connect-a-4x4-keypad-to-one-arduino-input/ Similar Tutorial For Multiple Pushbuttons - https://www.the-diy-life.com/multiple-push-buttons-on-one-arduino-input/ Components Required Arduino Uno - https://amzn.to/3abhNNG 4x4 Keypad - https://amzn.to/3e3EGoq LCD Shield - https://amzn.to/3aTRgov Breadboard & Jumpers - https://amzn.to/2QC3BW4 7 Resistors (6 Different) - https://amzn.to/2Ve4fuj If you've got any Tutorial requests or suggestions, let me know in the comments section below. I'm always looking for suggestions.