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Learning Javascript Robotics

Learning Javascript Robotics

By : Kassandra Perch
4.3 (6)
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Learning Javascript Robotics

Learning Javascript Robotics

4.3 (6)
By: Kassandra Perch

Overview of this book

There has been a rapid rise in the use of JavaScript in recent times in a variety of applications, and JavaScript robotics has seen a rise in popularity too. Johnny-Five is a framework that gives NodeBots a consistent API and platform across several hardware systems. This book walks you through basic robotics projects including the physical hardware builds and the JavaScript code for them. You'll delve into the concepts of Johnny-Five and JS robotics. You'll learn about various components such as Digital GPIO pins, PWM output pins, Sensors, servos, and motors to be used with Johnny-Five along with some advanced components such as I2C, and SPI. You will learn to connect your Johnny-Five robots to internet services and other NodeBots to form networks. By the end of this book, you will have explored the benefits of the Johnny-Five framework and the many devices it unlocks.
Table of Contents (11 chapters)
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10
Index

What is the Animation API?


This chapter's title leads to a lot of questions—what is the Animation API and how does it relate to servos? There's also a lot of terminology used here. To start, let's discuss the point and development of the Animation API to give us a little context.

Why do we need an Animation API?

The Animation API was created around the work started by Donovan Buck and Rick Waldron on walking robots—Rick built a quadruped bot, and Donovan, a Hexapod. Turns out, walking robots require a lot of timing on the servos involved, and the Johnny-Five library at the time was only capable of running servos from one degree to another at a maximum speed. This made walking very difficult, because even with servos of the same brand and make, the maximum speed is slightly different. Also, there are situations in which you want different servos to move at different speeds—this was impossible before the Animation API as well.

This led to the development of a function that allows you to set the...

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