book

Exploring Arduino, 2nd Edition

by Jeremy Blum

November 2019

Beginner

512 pages

11h 50m

English

Wiley

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Why Arduino?Who This Book Is ForWhat You'll Learn in This BookFeatures Used in This BookGetting the PartsWhat You'll NeedSource Code and Digital ContentErrataSupplementary Material and SupportWhat Is an Arduino?An Open Source PlatformBeyond This Book
Exploring the Arduino EcosystemCreating Your First ProgramSummary
Digital OutputsPulse-Width Modulation with analogWrite() Reading Digital InputsBuilding a Controllable RGB LED NightlightSummary
Understanding Analog and Digital SignalsReading Analog Sensors with the Arduino: analogRead() Using Variable Resistors to Make Your Own Analog SensorsSummary
Driving DC MotorsBuilding a Roving RobotSummary
Driving Servo MotorsBuilding a Sweeping Distance SensorUnderstanding and Driving Stepper MotorsBuilding a “One-Minute Chronograph”Summary
Understanding How Speakers WorkUsing tone() to Make SoundsBuilding a Micro PianoSummary

Understanding the Arduino's Serial Communication CapabilitiesListening to the ArduinoTalking to the ArduinoTalking to a Desktop AppSummary
Emulating a KeyboardEmulating a MouseSummary
Understanding Shift RegistersControlling Light Animations with a Shift RegisterSummary
History of the I2C BusI2C Hardware DesignCommunicating with an I2C Temperature ProbeCombining Shift Registers, Serial Communication, and I2C CommunicationsSummary
Overview of the SPI BusSPI Hardware and Communication DesignComparing SPI to I2C and UARTCommunicating with an SPI AccelerometerCreating an Audiovisual Instrument Using a 3-Axis AccelerometerSummary
Setting Up the LCDUsing the LiquidCrystal Library to Write to the LCDBuilding a Personal ThermostatSummary
Using Hardware InterruptsUsing Timer InterruptsBuilding an Interrupt-Driven Sound MachineSummary
Getting Ready for Data LoggingInterfacing the Arduino with an SD CardReal-Time ClocksBuilding an Entrance LoggerSummary
The Electromagnetic SpectrumReceiving Key Presses with the RF LinkMaking a Wireless DoorbellThe Start of Your Smart Home—Controlling a LampSummary
Demystifying BluetoothCommunication between Your Arduino and Your PhoneControlling an AC Lamp with BluetoothSummary
The Web, the Arduino, and YouControlling Your Arduino from the WebInterfacing with Web APIsSummary
Reading DatasheetsUnderstanding the Arduino Schematic
About the Technical Editor

Content preview from Exploring Arduino, 2nd Edition

6Making Sounds and Music

Parts You'll Need for This Chapter

Arduino Uno or Adafruit METRO 328
USB cable (Type A to B for Uno, Type A to Micro-B for METRO)
Half-size or full-size breadboard
Assorted jumper wires
Pushbuttons (×5)
220Ω resistor
10kΩ resistors (×5)
10kΩ potentiometer
8Ω loudspeaker
- CODE AND DIGITAL CONTENT FOR THIS CHAPTER
- Code downloads, videos, and other digital content for this chapter can be found at:
- exploringarduino.com/content2/ch6
- Code for this chapter can also be obtained from the Downloads tab on this book's Wiley web page:
- wiley.com/go/exploringarduino2e

Humans have five senses. As you might have guessed, you won't be interfacing your sense of taste with too many electronics; licking your Arduino is a bad idea. Similarly, smell won't generally come into play. In fact, if you can smell your electronics, something is probably burning (and you should stop what you're doing). That just leaves the senses of touch, sight, and sound. You've already interfaced with potentiometers and buttons that take advantage of your sense of touch, and you've hooked up LEDs that interface with your sense of sight. Now, what about your auditory senses? This chapter focuses on using the Arduino to make sounds so that you can more easily gather feedback from your projects.

You can generate sound with an Arduino in a number of ways. The simplest method is to use the tone() function, which this chapter focuses on most heavily. However, you can also use various shields that add ...