Freenove Ultimate Starter Kit

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Chapter 22 Matrix Keypad
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Chapter 22 Matrix Keypad
We have learned usage of a single button before. In this chapter, we will learn a device which integrates a
number of key, matrix keyboard.
Project 22.1 Matrix Keypad
In this project, we will try to get every key code on the Keypad work.
Component List
Raspberry Pi 3B x1
GPIO Expansion Board & Wire x1
BreadBoard x1
4x4 Matrix Keypad x1
Jumper