Book Image

Hands-On Internet of Things with Blynk

By : Pradeeka Seneviratne
Book Image

Hands-On Internet of Things with Blynk

By: Pradeeka Seneviratne

Overview of this book

Blynk, known as the most user-friendly IoT platform, provides a way to build mobile applications in minutes. With the Blynk drag-n-drop mobile app builder, anyone can build amazing IoT applications with minimal resources and effort, on hardware ranging from prototyping platforms such as Arduino and Raspberry Pi 3 to industrial-grade ESP8266, Intel, Sierra Wireless, Particle, Texas Instruments, and a few others. This book uses Raspberry Pi as the main hardware platform and C/C++ to write sketches to build projects. The first part of this book shows how to set up a development environment with various hardware combinations and required software. Then you will build your first IoT application with Blynk using various hardware combinations and connectivity types such as Ethernet and Wi-Fi. Then you'll use and configure various widgets (control, display, notification, interface, time input, and some advanced widgets) with Blynk App Builder to build applications. Towards the end, you will learn how to connect with and use built-in sensors on Android and iOS mobile devices. Finally you will learn how to build a robot that can be controlled with a Blynk app through the Blynk cloud and personal server. By the end of this book, you will have hands-on experience building IoT applications using Blynk.

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Table of Contents (10 chapters)
Preface
Preface
Who this book is for
What this book covers
To get the most out of this book
Get in touch
Free Chapter
1
Setting Up a Development Environment
Setting Up a Development Environment
What is Blynk?
The Blynk app builder
Getting parts
Setting up software on Raspberry Pi
Installing prerequisite software on Raspbian
Connecting Raspberry Pi with Blynk Cloud
Summary
2
Building Your First Blynk Application
Building Your First Blynk Application
Controlling an LED
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
3
Using Controller Widgets
Using Controller Widgets
Creating a project
Slider
Step
zeRGBa
Joystick
Summary
4
Using Display Widgets
Using Display Widgets
Value Display
Labeled Value
LED
Summary
5
Using Notification Widgets
Using Notification Widgets
Twitter
Notification widget
Email
Summary
6
Connecting with Sensors on Your Mobile Device
Connecting with Sensors on Your Mobile Device
Accelerometer
Light sensor
Proximity sensor
Summary
7
Setting Up a Personal Blynk Server
Setting Up a Personal Blynk Server
Setting up a Blynk server on Raspberry Pi
Connecting the Blynk app builder with the server
Using the administration interface
Summary
8
Controlling a Robot with Blynk
Controlling a Robot with Blynk
Choosing a chassis kit
Creating a Blynk app
Motor driver
Summary
9
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Setting Up a Personal Blynk Server

This chapter shows you how to install and configure a personal Blynk server on Raspberry Pi.

With this architecture, you can directly connect your hardware (that is, your Raspberry Pi) to the machine running the Blynk server through a network (whether an intranet or the internet) without using a third-party Blynk cloud.

In this chapter, you will learn about the following:

  • Installing Java on Raspberry Pi
  • Installing a Blynk personal server on Raspberry Pi
  • Configuring the server
  • Creating a Blynk app to connect with a personal Blynk server

You can run the Blynk personal server on Windows and Mac operating systems. The installation instructions can be found at https://github.com/blynkkk/blynk-server#blynk-server.

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