How to use a Matrix Keypad with Ardunio

Matrix Keypads are cool! It's like a keyboard that can easily be used to interface with your Arduino for various different projects, from combo locks to calculators to wireless remotes and extra buttons on your keyboard, these certainly are very useful. Today we're going to explore how to interface ...
By: PaperAirplaneandThings

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[original story: Instructables]

Instructables 25 Jun 02:25