Today we are going to work with Matrix Keypads, easy-to-use interfaces for your Arduino designs. We’ll also build an electronic combination lock.

I’m sure you’ve seen lots of devices that use keypads, they are a common user interface for many types of electronic equipment that require user input.

Membrane matrix keypads are very inexpensive and, as it turns out, they are also very easy to use with an Arduino. This makes them an ideal input device for your next project.

Today I’ll show you how these devices work and how simple it is to use them. We’ll start with the basics and finish by constructing an electronic combination lock.

Here is what will be covered in this video:

00:00 - Introduction
02:12 - How Keypads work
06:18 - Basic Keypad test
12:37 - Keypad with LCD
18:39 - Electronic Lock

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#arduino