58
Lesson 23 4*4 Matrix Keyboard
Overview
In this lesson, you will learn how to use the matrix keyboard.
Components Required
Name
Qty
Name
Qty
UNO R3 or MEGA 2560
1
4*4 Matrix Keyboard
1
Male to Male DuPont Wire
8
Component Introduction
This 16-button keypad provides a useful human interface for micro-
controller projects. The convenient adhesive backing provides a simple way
to mount the keypad in varies applications.
Schematic of 4x4 matrix keyboard shows in the following picture.
1 2 3 A
4 5 6 B
7 8 9 C
* 0
#
D
interface
8
7
6
5
4
3
2
1
Содержание Ultimate Starter Kit for Arduino
Страница 1: ......
Страница 2: ......
Страница 3: ......
Страница 17: ...17 Wiring Diagram Result LED is lit up and went out gradually like breathing...
Страница 24: ...24 Wiring Diagram Result The buzzer will ring for 2s and then mute for 2s...
Страница 26: ...26 Result The passive buzzer will play music and the LED blink simultaneously Wiring Diagram...
Страница 32: ...32 Wiring Diagram Result The stronger light the photoresistor received the more LEDs will light up...
Страница 74: ......
Страница 79: ...79 Wiring Diagram...