Book Image

Raspberry Pi 2 Server Essentials

By : Piotr J Kula
Book Image

Raspberry Pi 2 Server Essentials

By: Piotr J Kula

Overview of this book

There’s no end to what you can do with a Raspberry Pi – it makes a huge range of tech projects possible. This book shows you how to transform it into a multipurpose web server, able to store and manage resources that lets you build some truly innovative and impressive computing creations. You’ll learn how to use your Raspberry Pi 2 to host a website using a range of different languages, host a game server, store files, and run everything from a media center to a cloud network. If you want to take control of your technological world, start building your own server and find out what’s possible with the Raspberry Pi microcomputer. Begin by getting your Pi set up – follow each step as the book shows you how to prepare a network and configure the additional features that you’ll need to build your projects. Once you’ve done this you’ll dig a little deeper and set up your pi as a file server, making sure it’s built for speed using a range of different tools, including Python, Node.js and ASP.NET. Following this the book shows you how to extend your server to allow you to host games, and stream live HD video before customizing it even further to create a fully-fledged media center. It doesn’t stop there however – the book then dives into the exciting world of the Internet of Things (IoT). You’ll learn how to install Windows IoT onto your Raspberry Pi, the operating system that’s driving embedded software projects all around the world. Once you’ve done this you’ll be ready to explore IoT further, as the book shows you how to use your device to host a cloud network that can form the basis of a wider IoT project.
Table of Contents (19 chapters)
Raspberry Pi 2 Server Essentials
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

How long will it last?


Battery capacities are measured using mAh (milli Ampere hour):

  • By adding batteries in series, such as in this design, you do not gain more capacity but more voltage

  • By adding batteries in parallel, you gain more capacity but stay at the same voltage.

  • Finding the best balance depends on your requirements

To properly calculate how long your batteries will run can become a very complex calculation. You need to take a lot of things into consideration. In this design, using a higher voltage gives us more time because the voltage regulator needs to use less current (amps); a higher draw of charge reduces battery usability.

In an ideal world, you could say that we will be able to supply 1,500 milliamps per hour. This is 1.5 amps for an entire hour. If you want to extend battery life, you can add a separate battery circuit, such as the one demonstrated in this chapter, in parallel to the existing one. So, this would give you 1.5 amps for 2 hours or 3 amps for an hour.

In my own...