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.
Table of Contents (10 chapters)

Building the Blynk app

In this example, you will learn how to build a Blynk application to turn an LED on and off.

To start building a project, tap Create New Project in the center of the screen. This will bring you to the Create New Project wizard. You will walk through this wizard step by step.

Follow these steps to complete the Create New Project:

  1. Tap New Project:
Creating a New Project
  1. On the Create New Project page, type LED Controller in the Project Name textbox:
Providing a Project Name
  1. Tap CHOOSE DEVICE to get the available hardware models and tap Raspberry Pi 3 B from the list. After choosing the hardware model, tap OK.
If you have a previous version of Raspberry Pi board, choose the following:
Raspberry Pi 2: Raspberry Pi 2/A+/B+
Raspberry Pi 1 (Rev 1): Raspberry Pi B (Rev 1)
Raspberry Pi 1 (Rev 2): Raspberry Pi A/B (Rev 2)
Selecting the hardware model
  1. Tap...