Book Image

Hands-On Robotics with JavaScript

By : Kassandra Perch
Book Image

Hands-On Robotics with JavaScript

By: Kassandra Perch

Overview of this book

JavaScript has an effective set of frameworks and libraries that provide support for embedded device programming and the robotics ecosystem. You’ll be able to put your JavaScript knowledge to work with this practical robotics guide. The book starts by guiding you in setting up an environment to program robots with JavaScript and Rasberry Pi 3. You will build beginner-level projects, such as a line-following robot, and then upgrade your robotics skills with a series of projects that help you get to grips with the Johnny-Five library. As you progress, you’ll learn how you can improve your projects by enabling advanced hardware components and programming concepts. You’ll even build an advanced AI-enabled robot, connect its NodeBots to the internet, create a NodeBots Swarm, and explore Message Queuing Telemetry Transport (MQTT). By the end of this book, you will have enhanced your robot programming skills by building a range of simple to complex projects.
Table of Contents (19 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

Bringing in other node packages


Node.js prides itself on creating small, bordering on tiny, packages, and has the excellent npm package manager (and others) to help manage those packages. Because the Raspberry Pi runs a full version of Node.js, we can leverage that to our advantage and bring in other packages in order to build more interesting projects.

Project – building a rainbow

Can you remember the RGB code for orange off the top of your head? I can't. It's easier to remember to convert the color systems we do know into RGB (especially names such as red, orange, and cornflower blue). But instead of building a function to convert it for us, we'll leverage what I call Stilwell's law: if you've thought of it, it's probably on npm already. True to form, the color module is going to help us out.

 

 

 

 

 

 

Using the color npm module

In order to use the color npm module, first we will install it. In your SSH session, in your project folder, run the following code:

npm i --save color

This will also save...