- The difference between servos and motors is that you can tell a servo what angle to move to, while you can only tell a motor to go forwards or backward and at what speed.
- The difference between regular and continuous servos is regular servos can go from 0-180 degrees and you can control what degree, while you can only tell a continuous servo which way to rotate and at what speed, but it has full 360-degree movement.
- Servos require an external power source because otherwise, it will draw too much power from the Raspberry Pi, causing strange errors or even reboots while your project is running. Your motors may also run slowly or not respond to commands when powered directly from the Pi.
- You would use servos over motors when you want your movements to go to a specific angle every time.
- The benefits of the Johnny-Five Servos object is the ability to control all of your servos in the group with one command while retaining the ability to send commands to the individual servos.
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