Hands-On Internet of Things with Blynk电子书

Title Page

Copyright and Credits

Hands-On Internet of Things with Blynk

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Contributors

About the author

About the reviewer

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Preface

Who this book is for

What this book covers

To get the most out of this book

Download the example code files

Download the color images

Conventions used

Get in touch

Reviews

Setting Up a Development Environment

What is Blynk?

Hardware platforms

Connection types

Blynk architecture

Blynk ecosystem

Online resources

The Blynk app builder

Installing the Blynk app builder

Creating a Blynk account

Creating a new project

Getting parts

Raspberry Pi

Setting up Raspberry Pi

Setting up software on Raspberry Pi

Installing Raspbian

Writing Raspbian Stretch Lite image on SD card

Creating a configuration file for SSH

Connecting with Raspberry Pi with SSH

Configuring a wireless connection on Raspberry Pi

Installing prerequisite software on Raspbian

Updating and upgrading Raspbian

Installing git

Installing WiringPi

Deploying Blynk libraries

Connecting Raspberry Pi with Blynk Cloud

Summary

Building Your First Blynk Application

Controlling an LED

Things you need

Building the circuit

Building the Blynk app

Adding a Button widget

Running the project

Playing the app

Using virtual pins

Configuring Button widget with virtual pin

Modifying the main.cpp file

Running the project

Summary

Using Controller Widgets

Creating a project

Slider

Adding a Slider widget

Using digital pins

Using virtual pins

Step

Adding a Step widget

Using digital pins

Using virtual pins

zeRGBa

Using digital pins

Using virtual pins

Controlling an RGB LED

Building the circuit

Running the project

Joystick

Using digital pins

Using virtual pins

Summary

Using Display Widgets

Value Display

Using digital pins

Using virtual pins

Labeled Value

Configuring a Labeled Value widget

LED

Using virtual pins

Summary

Using Notification Widgets

Twitter

Adding a Twitter widget

Configuring

Sending tweets

Twitter button

Notification widget

Configuring the Notification widget

Writing a notification

Email

Configuring the Email widget

Writing code to send email

Summary

Connecting with Sensors on Your Mobile Device

Accelerometer

Accelerometer widget

Configuring the Accelerometer widget

Reading accelerometer data

Calculating overall acceleration

Light sensor

Adding the Light Sensor widget

Configuring the Light Sensor widget

Reading light sensor

Proximity sensor

Configuring the Proximity Sensor widget

Writing code

Summary

Setting Up a Personal Blynk Server

Setting up a Blynk server on Raspberry Pi

Enabling autostart with rc.local

Enabling autostart with crontab

Verifying that the Blynk server is running

Connecting the Blynk app builder with the server

Creating a new project to get the auth token

Using the administration interface

Writing a simple code to build the connection

Summary

Controlling a Robot with Blynk

Choosing a chassis kit

Adafruit

SparkFun

Pololu

Creating a Blynk app

Motor driver

Summary

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