We're going to add buttons to the project from the previous chapter, to allow users to change the way the RGB LED works by pressing buttons. When you look at a button, you see four prongs. While there are four prongs, there are only two input/outputs to a button—one where electricity goes in, and one where it goes out when the button is pressed. This is because a button essentially controls the flow of electricity. When the button is not pressed, the contacts are not connected and electricity cannot flow, and when pressed, a conductor bridges the two sides and electricity flows. This is how we will use the button as an input device: a high signal means the button is pressed, a low signal means it isn't.
Hands-On Robotics with JavaScript
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Hands-On Robotics with JavaScript
By:
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.
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Current Title:
Hands-On Robotics with JavaScript
Table of Contents (19 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Free Chapter
Setting Up Your Development Environment
Creating Your First Johnny-Five Project
Building Interactive Projects with RGB LED
Bringing in Input with Buttons
Using a Light Sensor to Create a Night-Light
Using Motors to Move Your Project
Using Servos for Measured Movement
The Animation Library
Getting the Information You Need
Using MQTT to Talk to Things on the Internet
Building a NodeBots Swarm
Assessments
Other Books You May Enjoy
Index
Customer Reviews