Building Arduino Projects for the Internet of Things PDF Free Download

Building Arduino Projects for the Internet of Things PDF Download Info

Building Arduino Projects for the Internet of Things PDF Free Download, iot projects using arduino.

Overview

   This book is a guidebook for Arduino enthusiasts, focusing on building everyday use devices and connecting them to the Internet. The book, written by a software developer and solution architect, provides a strong foundation for Arduino-based device development. It covers topics such as internet connectivity, common IoT protocols, custom web visualization, and Android apps that receive sensor data on-demand and in realtime. The book is essential for IoT device enthusiasts of all ages, as it helps them develop Android-based devices. The book covers topics such as connecting an Arduino device to the internet, creating an Arduino circuit that senses temperature, publishing data to servers and MQTT brokers, setting up channels in Xively, setting up an app in IBM Bluematrix, using Node-RED to define complex flows, publishing data visualization in a web app, reporting motion-sensor data through a mobile app, creating a remote control for house lights, creating machine-to-machine communication without human intervention, and creating a location-aware device. By 2020, the Internet of Things (IoT) is expected to reach over 50 billion connected devices, with the total revenue from IoT exceeding $1.5 trillion. IoT is more than just connected devices; it enables smarter objects to sense, communicate, and respond. Sensors like cameras, sound detectors, and speakers enable things to communicate with us and other objects, and artificial intelligence can help think. IoT has numerous applications, such as monitoring vitals with wristbands and security systems monitoring homes for intrusions. This book covers the basics of building IoT applications and follows a project-based approach, providing step-by-step instructions for building circuits. The material is designed for hobbyists and professionals interested in IoT, and the code is simple, readable, and minimal to help newcomers understand concepts and develop prototypes.

Building Arduino Projects for the Internet of Things

Building Blocks

   Arduino is an open-source platform that consists of simple hardware and software, allowing it to read sensor data and control components like lights, motors, thermostats, and garage doors. It is designed for prototyping purposes and is suitable for beginners in the Internet of Things (IoT) field. The learning objectives include using Arduino hardware, using the Arduino IDE, and writing, uploading, and executing basic Arduino programs. Hardware requirements include 14 digital pins on Arduino Uno, six analog pins (A0 through A5), a USB connector, and a battery power source. The book uses Arduino Uno for all projects, but it is not required. Internet connectivity is an important requirement for any Arduino board, and both Ethernet and WiFi shields are used in the book.

   Software requirements include a C-like language for programming Arduino boards, which can be downloaded from the Arduino website. The book also covers the basics of programming Arduino boards, including the Arduino IDE, IDE, and basic programming tasks. The Arduino IDE provides a simple and clean interface for writing code. It includes external libraries, constants and variables, and functions. External libraries include fully developed and tested code that can be included and used in your code. Constants and variables define all constants and variables that will be used to read and manipulate data. Functions provide implementation of all custom and standard functions.

   The Arduino programming language has several constructs, but this chapter provides the basics that have been used throughout the projects in this book. The Serial Monitor window displays all log messages generated by the Serial.print() and Serial.println() functions in the code

Internet Connectivity

   Internet connectivity is essential for IoT devices to send and receive data. There are various options available for connecting devices to the internet, including wired and wireless, Bluetooth, and cellular networks. The choice depends on factors such as network size, data processing, and device location. Examples include wired (Ethernet) food storage temperature monitoring, wireless (WiFi) soil moisture sensor, Bluetooth key tracker, cellular data wildlife tracker, and RFID inventory management.

   In this chapter, the author demonstrates how to attach an Ethernet shield to an Arduino Uno, write an Ethernet connectivity code, attach a WiFi shield, and set up Arduino Yún to connect to WiFi. The hardware required for wired internet connectivity is provided, and the Arduino IDE 1.6.4 or later version is required.

   To build the circuit, the Arduino must be disconnected from a power source, aligned pins, and connected to the LAN port of a router. The code is written in a single source file (*.ino) divided into three sections: external libraries, internet connectivity (Ethernet), and standard functions. In this chapter, we discuss the internet connectivity of Arduino Uno and its wireless capabilities. The first section includes all external libraries required for running the code, including the Ethernet library. The second section defines variables, constants, and functions for connecting to the internet using Ethernet. The MAC address and static IP address are defined, and the EthernetClient variable is defined for connectivity. The code for connecting to the internet using Ethernet is provided in Listing 2-3, which first attempts to connect to Ethernet with DHCP. The Ethernet printConnectionInformation() function is called to display connection information to the Serial Monitor window.

   The third and last section implements Arduino’s standard setup() and loop() functions. For this project, the loop() function will remain empty. The Arduino Uno wireless connectivity is discussed later in this chapter. The hardware required for wireless internet connectivity includes the Arduino IDE 1.6.4 or later version, a circuit, and a WiFi adapter.

Prototypes

   The author discusses the basics of Arduino and its various connectivity options and communication protocols. They discuss the development of IoT applications, such as monitoring noise levels around an animal sanctuary and logging noise information in a database. The author demonstrates the process of implementing complex flows using Node-RED, an event-processing engine that helps IoT developers avoid reinventing the wheel. Node-RED is a drag-and-drop toolkit that encapsulates reusable code for various tasks, such as HTTP requests, MQTT publish/subscribe, emails, SMS, tweets, and data storage. The flow designer allows developers to drag and drop nodes from a palette, and it starts after receiving input from standard input sources like HTTP, MQTT, and TCP.

   The flow ends with an output task, such as HTTP response, MQTT publish, or tweet. The author builds a simple project to get more acquainted with Node-RED, focusing on tweeting whenever it is sunny outside. The system includes an Arduino device with a light sensor, a Node-RED flow started by Arduino, and Twitter, which will tweet a message whenever a certain threshold is crossed. This chapter focuses on building a light sensor tweet system using Arduino and Node-RED. The hardware components required include Arduino IDE 1.6.4 or later version and Node-RED 0.13.2 or later version. To build the circuit, connect the power (5V) and ground (GND) ports on Arduino to the power (+) and ground (-) ports on the breadboard. Connect a jumper cable from the analog read port of the light sensor to the A0 (analog) port of the Arduino to read the light’s intensity value.

   The Info and Debug tabs display documentation about the selected node in the Node-palette or Flow tab, while the Deploy button allows for deployment and activation of flow changes to the server. To create a flow, use Flow 1 or create a new one by clicking on the plus button on the top-right side. The flow properties dialog box should appear, and the HTTP request node should be set to GET. The structure of the request varies based on the method selected.

Building Arduino Projects for the Internet of Things PDF Free Download