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)


Email is another useful widget that allows you to send emails from your Raspberry Pi through the Blynk server with the Raspberry Pi hardware.

You can send an email with the Blynk cloud under the following conditions:

You can send only one email per 15 seconds, but you will also be limited to only 100 emails per day, You can add the Email widget onto your project canvas using the Widget Box as usual:

Email widget placed next to the notification widget

Configuring the Email widget

Refer to the following steps:

  1. To configure the Email widget, tap on it to get the Email Settings page.
  2. In the Email Settings page, under TO, type in your recipient's email address.
  3. You can choose the content type as either text/html or...