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Mastering Internet of Things
Mastering Internet of Things

Mastering Internet of Things: Design and create your own IoT applications using Raspberry Pi 3

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Mastering Internet of Things

Preparing Our First Raspberry Pi Project

In this chapter, we'll start getting our hands dirty and create our first Raspberry Pi project. You are surely eager to get started. This chapter covers:

  • An introduction to the Raspberry Pi and peripherals
  • How to install Windows 10 on your device
  • How to start and administer your device
  • How to create a simple C# project for Raspberry Pi
  • How to download and run your application on your device
  • How to debug your application remotely on your device

Getting what you need

For the purposes of this chapter, you will need the following:

  • A Raspberry Pi 2 or 3 (you'll need three in total, throughout the book)
  • A micro SD memory card (16 GB or greater) for each Raspberry Pi
  • A shielded box, to avoid electrostatic damage to your device
  • A laptop or PC running Windows 10, where you can insert the memory card
  • An Ethernet network cable, if you use Raspberry Pi 2 or lack Wi-Fi
  • An internet connection

The Raspberry Pi 2 or 3 will allow us to run .NET applications and control peripherals using digital input and output easily. It's also a great platform for creating connected distributed services. One of its weaknesses, however, is its lack of simple out-of-the-box analog interfaces. To do analog input and output, you must connect additional chips or equipment using either synchronous or asynchronous serial communication interfaces that converts analog signals to digital ones. To simplify this task, you can also use an Arduino board that you connect to the Raspberry Pi via USB. This has the added benefit of allowing you to use a wide range of standard Arduino peripherals and devices in your Raspberry Pi projects. So, you need to add to your list:

  • Arduino shield for Raspberry Pi B+/2B/3B
  • Short serial USB cable to connect the Arduino board to the Raspberry Pi
  • Analog Arduino-compatible light sensor
  • Digital motion detection PIR sensor
  • Digital relay module

Most of the above equipment (and more) can be obtained in so-called Starter Kits. Such starter kits make for great fun, since they often include a wide variety of sensors and actuators for you to play with. For examples, refer to https://www.dfrobot.com/category-173.html.

You can use the Arduino Uno board as well. The advantage of the Arduino shield for Raspberry Pi is that it mounts easier on top of the Raspberry Pi.

Downloading the IoT Dashboard

Installing Windows 10 on a Raspberry Pi is both free and very easy. Microsoft has developed a tool for this purpose: the IoT Dashboard. Apart from allowing you to download and install Windows 10 on your devices, it also helps you manage your devices in the network. It's a very handy tool, and does not require you to learn any command-line syntax:

Download and install the IoT Dashboard from the following link: 
https://developer.microsoft.com/en-us/windows/iot/docs/iotdashboard

The IoT Dashboard is a Windows 10 app. Once running, you can choose to right-click on its icon and select Pin to taskbar, so that you can find it easier later.

If you don't want to use Windows 10, and want to use Linux instead, you can do so with the following modifications:

You can run .NET Core on Linux as well. For more information, see: https://github.com/dotnet/core/blob/master/samples/RaspberryPiInstructions.md

Installing Windows 10 on your Raspberry Pi

When you've installed and run the IoT Dashboard, a window appears:

  1. Select Set up a new device in the left-hand menu. This will open a simple form. Select your device (Raspberry Pi 2 & 3) and the OS you want to download and install (Windows 10 IoT Core).
  1. Also, insert the memory card into the computer and select the Drive letter it is assigned to. Other relevant information you need to provide include the Device name and an Administrator password:
Setting up a new device
Remember the password!
  1. If you have access to Wi-Fi (2.4 GHz), and are programming a device with access to Wi-Fi, make sure the correct Wi-Fi Network Connection is also assigned:
Configuring Wi-Fi connectivity
  1. Finally, accept the license agreement, and press the Download and install button:
Installing Windows 10

You need to confirm you really want to format the memory card, and install Windows 10 on it. All previous data on the card will be lost. The IoT Dashboard then goes on to download the operating system and preparing the memory chip for you, including configuring the device, according to the settings you provided. This process includes performing some command-line tasks, so you will see a terminal window appear temporarily.

Starting your Raspberry Pi

When the card is ready, an Explorer window might appear, and the IoT Desktop window gives you instructions to remove the card and insert it into your device. Do so, and make sure you connect your device correctly. Then power it on. Meanwhile, go to the My Devices view in the IoT Dashboard. It might take a short while to boot the device up the first time. Don't worry, after first-time initialization, your Raspberry Pi, with Windows 10, should appear. This process can take from a couple of minutes to a quarter of an hour, depending on the memory card used:

Device ready for use

Connecting to your Raspberry Pi

When the device appears in your list of devices, right-click on it, and select Open in Device Portal. Your browser should open and prompt you to login. The username is Administrator. Enter the password you provided when you prepared your memory chip.

The Device Portal is a very handy and powerful web portal for your device. In it you can:

  • Configure basic device settings (you should update your time zone at this point).
  • Update your password.
  • Remotely view what's on the screen. This will come in handy, especially for devices that are not connected to monitors. Press the Capture Screenshot button to try this out.
  • Control installed apps.
  • Access files.
  • View processes and system performance.
  • Access a command prompt.
  • Access debugging tools.
  • Control system devices.
  • Manage network connectivity.
  • Update Windows (make sure you have the latest version by clicking on the Check for updates button):
Windows 10 start screen
Since the Device Portal is so powerful and only protected by a simple username and password, of which the username is known beforehand, you need to take extra care by protecting it from outside access. Always keep your devices protected by firewalls. Don't allow anybody on the outside to connect to your devices, unless you have full control of what happens, and can make appropriate security decisions. 

We will present methods in this book, allowing you to develop IoT applications that will allow outside access in a simple way, but not through connecting to the device directly. This is much more secure. Using these techniques avoids risking the device needlessly.

Downloading the Arduino IDE

In projects where you want to use the Arduino in conjunction with the Raspberry Pi, you typically use an Arduino board that is mounted on top of the Raspberry Pi. This board also needs to be prepared. You do this using the Arduino IDE software, which can be downloaded from this link: https://www.arduino.cc/en/Main/Software. There are setup applications for Windows, Linux, and MAC.

Installing Firmata on your Arduino board

To access analog sensors on a Raspberry Pi, you need to add circuitry supporting serial communication to your board since it's not supported by default. One way is to use I2C or SPI circuits with analog to digital converters. Another way, which we explore in this book, is to use an Arduino board. The Arduino is a programmable chip, and, as such, you can program your own firmware with your own serial protocol inside. A simpler method, is to use the well-used and battle-tested Firmata protocol. Software for this already exists, and is available in the Arduino IDE directly. Libraries for Firmata exist in many languages.

To install Firmata on your Arduino board, simply follow the following procedure:

  1. Connect your Arduino board to your PC using a short USB cable.
  2. Load the Firmata application into the IDE. This is done by selecting File, then Examples, Firmata and Standard Firmata from the menu in the Arduino IDE.
  3. Specify the serial port you connected the Arduino board to. This is done under Tools and Port in the Arduino IDE.
  1. Next you need to specify the type of Arduino you're using. If using an Arduino Starter Kit, the name should be listed in the specification. You select the board under Tools and Board in the Arduino IDE.
  2. Finally, you upload the firmware to the Arduino board. You do this by clicking on the Upload button, formed as an arrow.
If unsure about what type of Arduino you've connected, try the Tools and Get Board Info command.

Your Arduino board is now prepared with the Firmata firmware. You can close the Arduino IDE. You will not use it any more in this book.

Testing your Arduino board

Without disconnecting your Arduino board from your PC, you can test that it works as it should. Since the Firmata protocol is well known, there exist a lot of applications on varying operating systems, that can read sensors and control devices connected to the Arduino. Since we demonstrate Windows 10 in this book, you can use the Windows Remote Arduino Experience App for this purpose. It can be downloaded at https://www.microsoft.com/sv-se/store/p/windows-remote-arduino-experience/9nblggh2041m.

To test this software, we also need to connect some devices to it for testing. Let's connect our light sensor, PIR sensor, and relay module to it to see if we can access them. Make sure to connect ground, power and signal correctly. Also make sure to differentiate between digital pins and analog pins on your Arduino board. For the purposes of our example, I connected the PIR sensor to digital pin 8, and the relay to digital pin 9. The light sensor was connected to the analog pin A0.

In my Starter Kit, ground (GND or -) is always black, power (3.3V, 5V or +) is always red. Analog pins are colored blue, while digital are colored green.

While digital pins 0 and 1 can be used on some Arduino boards for general purpose input and output, other boards use them for serial communication only. That's why we've selected pins 8 and 9 instead of 0 and 1.

Also, consider using an antistatic wrist strap to protect your hardware from electrostatic discharges.

When opening the Windows Remote Arduino Experience App, you must first choose how the app will communicate with your Arduino board. Since it's connected to a USB port, select USB in the Connection box, and select a communication speed of 57600 baud. Next, the app makes a search, and a list of devices will be presented. The Arduino board should appear. Select it and click the Connect button.

You should now be able to interact with the hardware you connected. First go to the Analog tab. Set the A0 pin to Input, and then watch how the value changes as you cover or illuminate the sensor accordingly:

Analog peripherals

Similarly, on the Digital tab, set the 8 pin to Input. Move your hand in front of the PIR sensor to activate it, and watch how the value jumps to a high voltage level. Set the 9 pin to Output and control it by setting the value correspondingly. You should hear the relay clicking as it changes position:

Digital peripherals

Now that you know your Arduino is programmed correctly, and that values are reported as they should be over the USB serial cable, you're ready to start programming.

Choosing a development environment

You're now ready to start actual coding. The first step is to choose a development environment. Since this book focuses on C# and .NET, including .NET Core 2, an obvious choice is to use Visual Studio. But it's not your only option.

For .NET Core development, you can also choose to use Roslyn, which, apart from being open source, can also be run directly on Windows 10 IoT Core, including the version we use on the Raspberry Pi. For more information about Roslyn, see https://msdn.microsoft.com/magazine/mt808499.

Another option, is to use Xamarin Studio. It's a development tool focusing on cross platform development using C#. With Xamarin you can develop applications for IoT devices, smart phones and tablets, as well as PCs using the same code base. It runs on both Windows and MAC. The community-edition is free. For more information, see https://www.xamarin.com/studio.

Since Microsoft acquired Xamarin, its cross-platform capabilities are also available in Visual Studio. A free version also exists. And Visual Studio can be run on MACs. The examples published in this book have been developed using Visual Studio 2017. For more information, see https://www.visualstudio.com/.

Using the IoT Gateway project and libraries

The projects presented in this book are all available on GitHub at https://github.com/PeterWaher/MIoT. To simplify development and prototyping, these projects use several libraries. These are available as downloadable and updateable packages (NuGets), most of which are open source, available on GitHub in the IoT Gateway repository at https://github.com/PeterWaher/IoTGateway. The IoT Gateway repository is available free for personal or academic use, or for security analysis. Commercial use requires a commercial license. The repository includes communication libraries, an encrypted object database, event logging infrastructure, application hosting, web server, content management, scripting, runtime-tools, and so on. Things that are good to have, to prototype real-world embedded IoT applications easily and quickly.

Creating your first project

Let's begin. Since our Raspberry Pi now runs Windows 10 IoT Core, .NET Core applications will run on it, including Universal Windows Platform (UWP) applications. From a blank solution, let's create our first Raspberry Pi application. Choose Add and New Project. In the Visual C# category, select Blank App (Universal Windows). Let's call our project FirstApp. Visual Studio will ask us for target and minimum platform versions. Check the screenshot and make sure the version you select is lower than the version installed on your Raspberry Pi.

In our case, the Raspberry Pi runs Build 15063. This is the March 2017 release. So, we accept Build 14393 (July 2016) as the target version and Build 10586 (November 2015) as the minimum version. If you want to target the Windows 10 Fall Creators Update, which supports .NET Core 2, you should select Build 16299 for both.

In the Solution Explorer, we should now see the files of our new UWP project:

New project

Adding NuGet packages

We proceed by adding functionality to our app from downloadable packages, or NuGets. From the References node, right-click and select Manage NuGet Packages. First, go to the Updates tab and make sure the packages that you already have are updated. Next, go to the Browse tab, type Firmata in the search box, and press Enter. You should see the Windows-Remote-Arduino package. Make sure to install it in your project. In the same way, search for the Waher.Events package and install it.

Aggregating capabilities

Since we're going to communicate with our Arduino using a USB serial port, we must make a declaration in the Package.appxmanifest file stating this. If we don't do this, the runtime environment will not allow the app to do it. Since this option is not available in the GUI by default, you need to edit the file using the XML editor. Make sure the serialCommunication device capability is added, as follows:

<Capabilities> 
   <Capability Name="internetClient" /> 
   <DeviceCapability Name="serialcommunication"> 
         <Device Id="any"> 
               <Function Type="name:serialPort" /> 
         </Device> 
   </DeviceCapability> 
</Capabilities> 

Initializing the application

Before we do any communication with the Arduino, we need to initialize the application. We do this by finding the OnLaunched method in the App.xml.cs file. After the Window.Current.Activate() call, we make a call to our Init() method where we set up the application.

   Window.Current.Activate(); 
   Task.Run((Action)this.Init); 
We execute our initialization method from the thread pool, instead of the standard thread. This is done by calling Task.Run(), defined in the System.Threading.Tasks namespace. The reason for this is that we want to avoid locking the standard thread. Later, there will be a lot of asynchronous calls made during initialization. To avoid problems, we should execute all these from the thread pool, instead of from the standard thread.

We'll make the method asynchronous:

private async void Init() 
{ 
   try 
   { 
         Log.Informational("Starting application."); 
         ... 
   } 
   catch (Exception ex) 
   { 
         Log.Emergency(ex); 
          
         MessageDialog Dialog =  
new MessageDialog(ex.Message, "Error"); 
         await Dialog.ShowAsync(); 
} IoT Desktop }

The static Log class is available in the Waher.Events namespace, belonging to the NuGet we included earlier. (MessageDialog is available in Windows.UI.Popups, which might be a new namespace if you're not familiar with UWP.)

Communicating with the Arduino

The Arduino is accessed using Firmata. To do that, we use the Windows.Devices.Enumeration, Microsoft.Maker.RemoteWiring, and Microsoft.Maker.Serial namespaces, available in the Windows-Remote-Arduino NuGet. We begin by enumerating all the devices it finds:

DeviceInformationCollection Devices =  
   await UsbSerial.listAvailableDevicesAsync(); 
foreach (DeviceInformationDeviceInfo in Devices) 
{ 

If our Arduino device is found, we will have to connect to it using USB:

if (DeviceInfo.IsEnabled&&DeviceInfo.Name.StartsWith("Arduino")) 
{ 
   Log.Informational("Connecting to " + DeviceInfo.Name); 
 
   this.arduinoUsb = new UsbSerial(DeviceInfo); 
   this.arduinoUsb.ConnectionEstablished += () => 
         Log.Informational("USB connection established."); 

Attach a remote device to the USB port class:

this.arduino = new RemoteDevice(this.arduinoUsb); 

We need to initialize our hardware, when the remote device is ready:

this.arduino.DeviceReady += () => 
{ 
   Log.Informational("Device ready."); 
 
   this.arduino.pinMode(13, PinMode.OUTPUT);    // Onboard LED. 
   this.arduino.digitalWrite(13, PinState.HIGH); 
 
   this.arduino.pinMode(8, PinMode.INPUT);      // PIR sensor. 
   MainPage.Instance.DigitalPinUpdated(8,
this.arduino.digitalRead(8));
this.arduino.pinMode(9, PinMode.OUTPUT); // Relay. this.arduino.digitalWrite(9, 0); // Relay set to 0 this.arduino.pinMode("A0", PinMode.ANALOG); // Light sensor. MainPage.Instance.AnalogPinUpdated("A0",
this.arduino.analogRead("A0")); };
Important: the analog input must be set to PinMode.ANALOG, not PinMode.INPUT. The latter is for digital pins. If used for analog pins, the Arduino board and Firmata firmware may become unpredictable.

Our inputs are then reported automatically by the Firmata firmware. All we need to do to read the corresponding values is to assign the appropriate event handlers. In our case, we forward the values to our main page, for display:

this.arduino.AnalogPinUpdated += (pin, value) => 
{ 
   MainPage.Instance.AnalogPinUpdated(pin, value); 
}; 
 
this.arduino.DigitalPinUpdated += (pin, value) => 
{ 
   MainPage.Instance.DigitalPinUpdated(pin, value); 
}; 

Communication is now set up. If you want, you can trap communication errors, by providing event handlers for the ConnectionFailed and ConnectionLost events. All we need to do now is to initiate communication. We do this with a simple call:

this.arduinoUsb.begin(57600, SerialConfig.SERIAL_8N1); 

Testing the app

Make sure the Arduino is still connected to your PC via USB. If you run the application now (by pressing F5), it will communicate with the Arduino, and display any values read to the event log. In the GitHub project, I've added a couple of GUI components to our main window, that display the most recently read pin values on it. It also displays any event messages logged. We leave the relay for later chapters.

For a more generic example, see the Waher.Service.GPIO project at https://github.com/PeterWaher/IoTGateway/tree/master/Services/Waher.Service.GPIO. This project allows the user to read and control all pins on the Arduino, as well as the GPIO pins available on the Raspberry Pi directly.

Deploying the app

You are now ready to test the app on the Raspberry Pi. You now need to disconnect the Arduino board from your PC, and install it on top of the Raspberry Pi. The power of the Raspberry Pi should be turned off when doing this. Also make sure the serial cable is connected to one of the USB ports of the Raspberry Pi. Begin by switching the target platform, from Local Machine to Remote Machine, and from x86 to ARM:

Run on a remote machine with an ARM processor

Your Raspberry Pi should appear automatically in the following dialog. You should check the address with the IoT Dashboard used earlier, to make sure you're selecting the correct machine:

Select your Raspberry Pi

You can now run or debug your app directly on the Raspberry Pi, using your local PC. The first deployment might take a while, since the target system needs to be properly prepared. Subsequent deployments will be much faster. Open the Device Portal from the IoT Dashboard, and take a Screenshot, to see the results. You can also go to the Apps Manager in the Device Portal, and configure the app to be started automatically at startup:

App running on the Raspberry Pi

Summary

In this chapter, you've been given an introduction on how to develop apps for the Raspberry Pi using C#. You've learned how to prepare the hardware and how to use the IoT Dashboard to install and configure Windows 10 IoT on the device. You've used the Device Portal to control the applications running on it. You've learned how to extend the functionality of the Raspberry Pi by using Arduino boards. You've configured these with Firmata using the Arduino IDE. You've learned how to create a Universal Windows Platform application to run on the Raspberry Pi, and how to use NuGet packages to add existing software components to your application. You also successfully tested and deployed your application. In the next chapter, you will learn the basics of creating a working sensor.

There are many excellent blog posts on the internet that provide tutorials concerning C# development on the Raspberry Pi. One example of such an article is https://msdn.microsoft.com/magazine/mt808503.
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Key benefits

  • • Design and implement state-of-the-art solutions for the Internet of Things
  • • Build complex projects using motions detectors, controllers, sensors, and Raspberry Pi 3
  • • A hands-on guide that provides interoperable solutions for sensors, actuators, and controllers

Description

The Internet of Things (IoT) is the fastest growing technology market. Industries are embracing IoT technologies to improve operational expenses, product life, and people's well-being. Mastering Internet of Things starts by presenting IoT fundamentals and the smart city. You will learn the important technologies and protocols that are used for the Internet of Things, their features, corresponding security implications, and practical examples on how to use them. This book focuses on creating applications and services for the Internet of Things. Further, you will learn to create applications and services for the Internet of Things. You will be discover various interesting projects and understand how to publish sensor data, control devices, and react to asynchronous events using the XMPP protocol. The book also introduces chat, to interact with your devices. You will learn how to automate your tasks by using Internet of Things Service Platforms as the base for an application. You will understand the subject of privacy, requirements they should be familiar with, and how to avoid violating any of the important new regulations being introduced. At the end of the book, you will have mastered creating open, interoperable and secure networks of things, protecting the privacy and integrity of your users and their information.

Who is this book for?

If you're a developer or electronic engineer and are curious about the Internet of Things, this is the book for you. With only a rudimentary understanding of electronics and Raspberry Pi 3, and some programming experience using managed code, such as C# or Java, you will be taught to develop state-of-the-art solutions for the Internet of Things.

What you will learn

  • • Create your own project, run and debug it
  • • Master different communication patterns using the MQTT, HTTP, CoAP, LWM2M and XMPP protocols
  • • Build trust-based as hoc networks for open, secure and interoperable communication
  • • Explore the IoT Service Platform
  • • Manage the entire product life cycle of devices
  • • Understand and set up the security and privacy features required for your system
  • • Master interoperability, and how it is solved in the realms of HTTP,CoAP, LWM2M and XMPP

Product Details

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Publication date : Mar 28, 2018
Length: 410 pages
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Publication date : Mar 28, 2018
Length: 410 pages
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ISBN-13 : 9781788397438
Vendor :
Raspberry Pi
Category :

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Table of Contents

17 Chapters
Preparing Our First Raspberry Pi Project Chevron down icon Chevron up icon
Creating a Sensor to Measure Ambient Light Chevron down icon Chevron up icon
Creating an Actuator for Controlling Illumination Chevron down icon Chevron up icon
Publishing Information Using MQTT Chevron down icon Chevron up icon
Publishing Data Using HTTP Chevron down icon Chevron up icon
Creating Web Pages for Your Devices Chevron down icon Chevron up icon
Communicating More Efficiently Using CoAP Chevron down icon Chevron up icon
Interoperability Chevron down icon Chevron up icon
Social Interaction with Your Devices Using XMPP Chevron down icon Chevron up icon
The Controller Chevron down icon Chevron up icon
Product Life Cycle Chevron down icon Chevron up icon
Concentrators and Bridges Chevron down icon Chevron up icon
Using an Internet of Things Service Platform Chevron down icon Chevron up icon
IoT Harmonization Chevron down icon Chevron up icon
Security for the Internet of Things Chevron down icon Chevron up icon
Privacy Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
(4 Ratings)
5 star 75%
4 star 0%
3 star 0%
2 star 0%
1 star 25%
William J. Miller Jul 27, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Mastering Internet of Things - provides a broad overview of IoT from a protocol prospective and helps an owner of a Rayberry PI 3 B+ be able to utilize Microsoft 10 IoT Core Operating System. It also helps the user to learn more about device provisioning and how to read data using XEP SensorData and to perform control actions using XEP Control. Many of the aspects discussed can be found in the IEEE Open Source Repository as new standard for IoT developed by IEEE SA..
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Wilson Apr 17, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
As I'm writing this, a judge ruled that Oracle my collect billions from Google for its use of Java on Android. So this book enabling you to leverage your C# skills on Windows rather than just Java is prescient. Additionally, this book covers the XMPP protocol which is more secure and "free" than those more widely supported by vendors. This means that by following the book's step-by-step instructions you'll end up with real security, end-to-end on a peer network that that doesn't require payment to a cloud vendor.
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Naveen Nov 03, 2019
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It is very helpful
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Brennan Jan 05, 2019
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
I'm not sure who that target audience of this book is supposed to be. I've done a little bit of tinkering with Arduino, electronics, and am fluent with programming. This book has almost no value to me. At best, it gave a tiny bit of teaser for a few protocols I can Google to find out more about.It is extremely specific and only has value if you are planning on installing Windows 10 IoT on your Raspberry Pi and programming it in C#. The vast majority of people working with the Pi and Arduino are not using C#. It really applies more to the corporate enterprise employee that runs a .NET stack. It's too targeted to that; there's very little information here that can be applied to other platforms.It's not for novices to electronics because it has you building things with mains AC with only half a page of explanation of what is being built and a single sentence that says "Be sure to follow appropriate safety regulations when working with electricity". If you are going to have people splicing wires into live household AC then I think a little bit more precaution and explanation is needed for readers who don't know what they are doing. The book assumes you already know to build circuits and read schematics.At the same time, it's not for people experienced with electronics either because it wastes time describing what a relay is, how to light an LED with a resistor using Ohm's Law.It's not for programmers, because it dedicates an ENTIRE chapter going into the basics of what HTTP is. The book assumes you are already fluent with C# so not sure how you can get to that point without knowing what HTTP and a URL is.It's doesn't give a wide view of the IoT landscape and what other vendors and platforms are available out there. I was disappointed that there was no talk about hardware platforms that are more suitable for IoT like the ESP8266 or Photon. Not a single mention of other IoT platforms like those from AWS or Google.This book really needs to cut out all the code, just be an overview book, go into more detail, and add more topics—it's of no value if you aren't intending to install Windows on your Pi. Or it needs to make it clearer and be called something like IoT with Windows and C#.
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FAQs

How do I buy and download an eBook? Chevron down icon Chevron up icon

Where there is an eBook version of a title available, you can buy it from the book details for that title. Add either the standalone eBook or the eBook and print book bundle to your shopping cart. Your eBook will show in your cart as a product on its own. After completing checkout and payment in the normal way, you will receive your receipt on the screen containing a link to a personalised PDF download file. This link will remain active for 30 days. You can download backup copies of the file by logging in to your account at any time.

If you already have Adobe reader installed, then clicking on the link will download and open the PDF file directly. If you don't, then save the PDF file on your machine and download the Reader to view it.

Please Note: Packt eBooks are non-returnable and non-refundable.

Packt eBook and Licensing When you buy an eBook from Packt Publishing, completing your purchase means you accept the terms of our licence agreement. Please read the full text of the agreement. In it we have tried to balance the need for the ebook to be usable for you the reader with our needs to protect the rights of us as Publishers and of our authors. In summary, the agreement says:

  • You may make copies of your eBook for your own use onto any machine
  • You may not pass copies of the eBook on to anyone else
How can I make a purchase on your website? Chevron down icon Chevron up icon

If you want to purchase a video course, eBook or Bundle (Print+eBook) please follow below steps:

  1. Register on our website using your email address and the password.
  2. Search for the title by name or ISBN using the search option.
  3. Select the title you want to purchase.
  4. Choose the format you wish to purchase the title in; if you order the Print Book, you get a free eBook copy of the same title. 
  5. Proceed with the checkout process (payment to be made using Credit Card, Debit Cart, or PayPal)
Where can I access support around an eBook? Chevron down icon Chevron up icon
  • If you experience a problem with using or installing Adobe Reader, the contact Adobe directly.
  • To view the errata for the book, see www.packtpub.com/support and view the pages for the title you have.
  • To view your account details or to download a new copy of the book go to www.packtpub.com/account
  • To contact us directly if a problem is not resolved, use www.packtpub.com/contact-us
What eBook formats do Packt support? Chevron down icon Chevron up icon

Our eBooks are currently available in a variety of formats such as PDF and ePubs. In the future, this may well change with trends and development in technology, but please note that our PDFs are not Adobe eBook Reader format, which has greater restrictions on security.

You will need to use Adobe Reader v9 or later in order to read Packt's PDF eBooks.

What are the benefits of eBooks? Chevron down icon Chevron up icon
  • You can get the information you need immediately
  • You can easily take them with you on a laptop
  • You can download them an unlimited number of times
  • You can print them out
  • They are copy-paste enabled
  • They are searchable
  • There is no password protection
  • They are lower price than print
  • They save resources and space
What is an eBook? Chevron down icon Chevron up icon

Packt eBooks are a complete electronic version of the print edition, available in PDF and ePub formats. Every piece of content down to the page numbering is the same. Because we save the costs of printing and shipping the book to you, we are able to offer eBooks at a lower cost than print editions.

When you have purchased an eBook, simply login to your account and click on the link in Your Download Area. We recommend you saving the file to your hard drive before opening it.

For optimal viewing of our eBooks, we recommend you download and install the free Adobe Reader version 9.