In this chapter, you learned how to use some important display widgets with your Blynk projects. Display widgets help you to display any data on the Blynk app that comes from the hardware. Most of the display widgets support both digital and virtual pins, but some only support Virtual pins. In Chapter 5, Using Notification Widgets, we will focus on accessing and using third-party services for Blynk from Raspberry Pi.

Hands-On Internet of Things with Blynk
By :

Hands-On Internet of Things with Blynk
By:
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)
Preface
Setting Up a Development Environment
Building Your First Blynk Application
Using Controller Widgets
Using Display Widgets
Using Notification Widgets
Connecting with Sensors on Your Mobile Device
Setting Up a Personal Blynk Server
Controlling a Robot with Blynk
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