About This Title

Pages: 80
Published: February 2022
ISBN: 9781680509236
Edition: 1
In Beta

Skill Level Meter

Build a Binary Clock with Elixir and Nerves

Use Layering to Produce Better Embedded Systems

by Frank Hunleth and Bruce A. Tate

Want to get better at coding Elixir? Write a hardware project with Nerves. As you build this binary clock, you’ll build in resiliency using OTP, the same libraries powering many commercial phone switches. You’ll attack complexity the way the experts do, using a layered approach. You’ll sharpen your debugging skills by taking small, easily verified steps toward your goal. When you’re done, you’ll have a working binary clock and a good appreciation of the work that goes into a hardware system. You’ll also be able to apply that understanding to every new line of Elixir you write.

eBook Formats:

  • PDF for desktop/tablets

  • epub for Apple Books, e-readers

  • mobi for Kindle readers

Get all eBook formats here for $18.95 (USD)

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This book is in Beta, final version expected Feb 2022

Beta Books: What do I get?


Combining software with hardware can be frustrating, but you can become proficient in no time by taking a simple, logical approach. Blinking a single LED is the traditional “hello-world” of embedded systems. Building your own binary clock is the logical next step. It blinks groupings of LEDs based on the system time. This guide walks you through a working project using the techniques used by experts who build software for hardware every day.

This common sense project moves forward in tiny, logical steps. As you progress, you can verify each step before moving on to the next. You don’t have to be a Nerves novice to benefit from this project. Become a better Elixir programmer as you build your own desktop showpiece. With a layered approach to software design, you’ll learn to control the complexity of your programs the way the experts do by focusing on one small slice of your system at a time.

When you’re done, you’ll have your own binary clock, and also more of the tools you need to design and build your own Nerves and Elixir projects. You’ll also be a better programmer with a deeper appreciation of layering techniques for controlling complexity.

What You Need

This project is for Elixir developers who want to get started with Nerves, or improve their skills. The project is designed for Elixir 1.11 and Nerves 1.7, but later versions will probably work as well with slight modifications. The project uses a Raspberry Pi zero with a set of components. With slight modifications, you can make this book work with other components as well.

Resources

Releases:

  • B1.0 2021/11/03

Contents & Extracts

Note: Contents and extracts of beta books will change as the book is developed.

Introduction

  • The Prototype
    • Burn Firmware
      • Project: Install Firmware
      • What You Built
    • Build a Circuit
      • Build an LED Circuit
      • Control the LED from IEx
      • What You Built
  • The Working Layered System
    • Blink an LED with Software Layers excerpt
      • The Layers of a Nerves Project
      • Initialize a Nerves Project From Scratch
      • Build a Coreless Boundary
      • What You Built
    • Build the Clock’s Circuit excerpt
      • Plan the Hardware
      • Prepare the Constant Current Driver
      • Finish the Hardware
      • Test the Hardware and Build the Cabinet
      • What You Built
    • Write a Clock with a Core excerpt
      • Write the Core
      • Adapters Run One System, Three Ways
      • Build the Service Layer
      • What You Built
  • Your Customizations
    • Build Your Own Extensions
      • Use Numbers Instead of Bits
      • Add a Calendar
      • Track the Trains
      • Trigger Alarms
      • What You’ll Build
    • What’s Next

Author

Frank Hunleth is an embedded systems programmer, OSS maintainer, and Nerves core team member. When not in front of a computer, he loves running and spending time with his family.

Bruce Tate is a kayaker, programmer, and father of two from Chattanooga, Tennessee. The author of more than 10 books, he has been around Elixir from the beginning. He is the founder of Groxio, a company that trains Elixir developers.

eBook Formats:

  • PDF for desktop/tablets

  • epub for Apple Books, e-readers

  • mobi for Kindle readers

Get all eBook formats here for $18.95 (USD)

Add to Cart we accept visa, mastercard, amex, discover, paypal

This book is in Beta, final version expected Feb 2022

Beta Books: What do I get?

Related Titles:

Skill Level Meter

About This Title

Pages: 80
Published: February 2022
ISBN: 9781680509236
Edition: 1
In Beta