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Mastering Arduino

You're reading from   Mastering Arduino A project-based approach to electronics, circuits, and programming

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Product type Paperback
Published in Sep 2018
Publisher Packt
ISBN-13 9781788830584
Length 372 pages
Edition 1st Edition
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Author (1):
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Jon Hoffman Jon Hoffman
Author Profile Icon Jon Hoffman
Jon Hoffman
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Toc

Table of Contents (23) Chapters Close

Preface The Arduino FREE CHAPTER Basic Electronics Circuit Diagrams Basic Prototyping Arduino IDE Programming the Arduino - The Basics Programming the Arduino - Beyond the Basics Motion Sensor Environment Sensors Obstacle Avoidance and Collision Detection Fun with Lights Fun with Sound Using LCD Displays Speech Recognition and Voice Synthesizing DC Motors and Motor Controllers Servo Motors Using a Relay Remotely Controlling the Arduino Creating a Robot Bluetooth LE Bluetooth Classic Another Book You May Enjoy

Code

Let's start off by using the tone() function.

Using the tone function

For the first few examples in this chapter, we will be using the Arduino tone() function. This function comes in two varieties. The first variety takes two arguments, where the first is the pin number that the buzzer or speaker is connected to and the second is the frequency in hertz to play the sound at. The function looks like this:

tone(pinNumber, frequency);

When this function is used with only two parameters, the sound is played indefinitely. The following code shows how we could use this function to play a note using the previous circuit diagram:

#define PIEZOPIN 7
#define SPEAKERPIN 8

int soundPin = PIEZOPIN;

void setup() {
  tone...
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