- An analog input sensor takes in data from its surroundings and converts it into a value that is represented by a voltage level sent either to an intermediate processor or the microcontroller directly.
- Analog sensors cannot interface directly with the Pi because all of the Pi's GPIO pins are digital.
- Two digital interfaces we can use to interface analog sensors with the Pi are I2C and SPI.
- The two pins (besides ground and power) that an I2C device needs to operate are an SDA (data) pin and an SCL (clock) pin.
- The sensor object can fire the
dataevent, which means data has been collected, and thechangeevent, which indicates that the data from the sensor has changed. - barcli is helpful in processing sensor data because instead of reading hundreds of lines of numbers, you can look at a bar graph and how it changes when you manipulate the sensor.
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