- Animations are necessary for complex movements with multiple servos because timing is key for these movements, and moving all servos as fast as they can go with no easing makes complex movements nigh-impossible.
- A keyframe is an array of information about the locations of the servos in an animation at an arbitrary point in time, defined by the animation segment.
- A cue point is a point in the animation that lines up with a keyframe. When these are combined with duration in the animation segment, you will get a time for each keyframe.
- The three pieces of an animation segment are the keyframes, the cue points, and the duration.
- Easing manipulates our animation keyframes and segments by changing the acceleration rate of the servos as they travel from one keyframe to another.
- The method of the animation object that stops the current segment and clears the animation queue is
Animation.stop()
. - Calling
Animation.speed(.25)
slows the currently running animation to 1/4 of its original speed.
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.
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