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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

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Product type Paperback
Published in Aug 2018
Publisher Packt
ISBN-13 9781789342055
Length 214 pages
Edition 1st Edition
Languages
Concepts
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Author (1):
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Kassandra Perch Kassandra Perch
Author Profile Icon Kassandra Perch
Kassandra Perch
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Toc

Table of Contents (14) Chapters Close

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

Chapter 9

  1. The Pi is well-suited for projects that require remote data because of its onboard ability to connect to the internet via either WiFi or Ethernet.
  2. The considerations that need to be taken when making regular web requests from the Pi are:
    • The size of the payload
    • How much CPU parsing the payload will take
    • Whether the data being accessed was meant to be accessed
    • WiFi requests take a lot of power for the Pi and can cause problems if the Pi doesn't have a proper power supply
  3. We can chain the LCD object calls, such as LCD.clear().home() because the Johnny-Five Objects always return the instance of the Object the method was working on, so another method can be called on it.
  4. We use an I2C backpack with our LCD to cut the number of needed wires and pins from 8 to 2, and eliminate the need to hook up our own potentiometer to adjust LCD contrast.
  5. We would need...
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