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Lesson 5 Active Buzzer
Overview
In this lesson, you will learn how to generate a sound with an active buzzer.
Components Required
Name
Qty
Name
Qty
UNO R3 or MEGA 2560
1
1KΩ Resistor
1
Active Buzzer
1
NPN Transistor (S8050)
1
Breadboard
1
DuPont Wire
10
Component Introduction
A buzzer or beeper is a device which can generate audio. An active buzzer will
generate a tone using an internal oscillator, so all that is needed is a DC voltage.
A transistor is a semiconductor device used to amplify or switch electronic signals
and electrical power. The transistor can also be used to control the circuit conductive
or disconnected. And the transistor is divided into two kinds, one is NPN like S8050,
another one is PNP like S8550.
Содержание Ultimate Starter Kit for Arduino
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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...
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Страница 79: ...79 Wiring Diagram...