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Learning Javascript Robotics

Learning Javascript Robotics

By : Kassandra Perch
4.3 (6)
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Learning Javascript Robotics

Learning Javascript Robotics

4.3 (6)
By: Kassandra Perch

Overview of this book

There has been a rapid rise in the use of JavaScript in recent times in a variety of applications, and JavaScript robotics has seen a rise in popularity too. Johnny-Five is a framework that gives NodeBots a consistent API and platform across several hardware systems. This book walks you through basic robotics projects including the physical hardware builds and the JavaScript code for them. You'll delve into the concepts of Johnny-Five and JS robotics. You'll learn about various components such as Digital GPIO pins, PWM output pins, Sensors, servos, and motors to be used with Johnny-Five along with some advanced components such as I2C, and SPI. You will learn to connect your Johnny-Five robots to internet services and other NodeBots to form networks. By the end of this book, you will have explored the benefits of the Johnny-Five framework and the many devices it unlocks.
Table of Contents (11 chapters)
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10
Index

What you'll need for this chapter


For the project in this chapter, you'll need your board, a USB cable, and a character LCD character display. A breadboard and a handful of breadboard wires will also come in handy.

We will go over how to use character LCDs with or without an I2C interface. An example of one with an I2C interface can be found here: http://www.amazon.com/SainSmart-Serial-Module-Display-Arduino/dp/B00813HBEQ. A way to quickly identify an I2C-compatible character LCD is by the backpack that is presoldered on to it, as shown in the following examples. It only uses four pins labeled as VCC, GND, SDA, and SCL:

Examples of I2C backpacks on character LCDs

An example of a character LCD without an I2C interface is available here: https://www.adafruit.com/products/181. The main visible difference is that these character LCDs use more than the four pins used by I2C interfaces.

Note

Note that these may also require assembly by soldering!

The following screenshot is an example of this:

A non...

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