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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

Animation events


A lot of movements require waiting for one segment to finish before starting another. Some segments should only be fired at certain times, as well. The best way to handle these timings and communication systems is by using Johnny-Five's animation events.

We tap into these events by assigning callbacks to special attributes on segments. Let's go into the details of each one and see when they will fire.

Events

Details

onstart

The onstart callback fires when the segment has begun playing in the animation.

onstop

The onstop callback is only called when the segment is either in the queue or currently running, but the animation is stopped via animation.stop().

onpause

The onpause callback is only called when the segment is queued or running in an animation that has been paused via animation.pause().

oncomplete

The oncomplete callback only fires when the segment has completed running in an animation. Note: This does NOT apply to looped segments. See the onloop...

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