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Hands-On Robotics with JavaScript

You're reading from Hands-On Robotics with JavaScript Build robotic projects using Johnny-Five and control hardware with JavaScript and Raspberry Pi

Product type Paperback

Published in Aug 2018

Publisher Packt

ISBN-13 9781789342055

Length 214 pages

Edition 1st Edition

Languages

JavaScript

Tools

Raspberry Pi

Concepts

Robotics

Author (1):

Kassandra Perch

View More author details

Table of Contents (14) Chapters

Preface

1. Setting Up Your Development Environment FREE CHAPTER

2. Creating Your First Johnny-Five Project

3. Building Interactive Projects with RGB LED

4. Bringing in Input with Buttons

5. Using a Light Sensor to Create a Night-Light

6. Using Motors to Move Your Project

7. Using Servos for Measured Movement

8. The Animation Library

9. Getting the Information You Need

10. Using MQTT to Talk to Things on the Internet

11. Building a NodeBots Swarm

12. Assessments

13. Other Books You May Enjoy

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Differences between motors and servos

The average hobby servo looks like this:

Also pictured are common accessories: some different arms, and mounting screws/washers. The wire ends terminate in a solid socket of three: perfect for attaching to our PWM hat.

The motors we worked with last chapter have some very basic differences, and we should explore them before we start our servo project.

Calculated movements

Unlike the motors we dealt with in the previous chapter, you can make precise and calculated movements with a servo. Name a degree between 0 and 180 on a regular servo, and it will go. Motors (excluding stepper motors, which aren't covered in this book) cannot make these precise movements. So if you're looking...

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Authors (1)

Kassandra Perch

Kassandra Perch

Kassandra Perch is an open web developer and supporter. She began as a frontend developer and moved to server-side with the advent of Node.js and was especially enthralled by the advance of the NodeBots community. She travels the world speaking at conferences about NodeBots and the fantastic community around them.

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