Easy Countdown with Buzzer

How to make an easy and adaptable countdown.

Jul 2, 2016

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21 respects

Components and supplies

5

Resistor 10k ohm

2

General Purpose Transistor NPN

1

Breadboard (generic)

1

Arduino UNO

1

7 segment Display (common cathode )

1

Buzzer

7

Resistor 221 ohm

3

Pushbutton switch 12mm

Project description

Code

Countdown

arduino

Downloadable files

layout.jpg

layout.jpg

connection diagram

connection diagram

layout.jpg

layout.jpg

Documentation

Countdown

Countdown

Countdown

Countdown

Countdown

Countdown

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Marcazzan_M

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Table of contents

Intro

21

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