- 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.
- 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
- 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. - 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.
- We would need more components to use the LCD without the backpack—we would need a potentiometer to control the contrast of the LCD.
-
LCD.on()does not turn on the entire LCD, instead, it turns on the LCD backlight.
Hands-On Robotics with JavaScript
By :
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