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  • Book Overview & Buying Learning Beaglebone Python Programming
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Learning Beaglebone Python Programming

Learning Beaglebone Python Programming

By : Alexander C Hiam
Buy this Book
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Learning Beaglebone Python Programming

Learning Beaglebone Python Programming

By: Alexander C Hiam
Buy this Book

Overview of this book

If you have experience with the Python language and are interested in getting started with electronics, then BeagleBone Black is the perfect platform for you and this book will provide you with the information you need.
Table of Contents (14 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Before We Begin
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1. Before We Begin
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An overview of BeagleBone
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Pulse width modulation
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Tools and additional hardware
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The BeagleBone design
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Board comparison
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Helpful resources
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Summary
2
2. Getting Started
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2. Getting Started
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Initial setup
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Updating your Debian image
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Connecting to your BeagleBone
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Connecting to the Internet
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Using the serial console
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Updating your software
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The PyBBIO library
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The Adafruit_BBIO library
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Summary
3
3. Digital Outputs
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3. Digital Outputs
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GPIO modules
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Interactive GPIO
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Calculating resistor values for LEDs
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Driving higher currents from GPIO pins
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Blink
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Taking advantage of the OS
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Summary
4
4. PWM and ADC Subsystems
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4. PWM and ADC Subsystems
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PWM
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ADC
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Your first robot
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Summary
5
5. User Input
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5. User Input
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Buttons
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Potentiometers
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Summary
6
6. Program Output
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6. Program Output
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LED displays
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SMTP
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Character LCD
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Summary
7
7. Serial Communication
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7. Serial Communication
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Serial communication
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UART
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I2C
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SPI
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Summary
8
8. Interfacing with External Devices
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8. Interfacing with External Devices
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Accelerometers
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Summary
9
9. Using the Network
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9. Using the Network
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TCP/IP
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HTTP
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IoT Services
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Summary
10
10. A Practical Example
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10. A Practical Example
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Weather station
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Connecting to the Internet
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Weather alerts
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Summary
11
A. The BeagleBone Black Pinout
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A. The BeagleBone Black Pinout
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B. Disabling HDMI
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B. Disabling HDMI
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Index
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Index

Accelerometers

Accelerometers, made abundant and affordable by the cell phone industry, are one of the most common sensors found in embedded devices these days. As their name implies, accelerometers sense acceleration, in one, two, or three axes. This is useful for things, such as pedometers, as you can sense the vibrations from a footstep, and they can also be used for sensing orientation by measuring the acceleration due to gravity on the different axes.

Hooking it up

Let's take a look at interfacing with the analog devices' ADXL345 accelerometer. It can measure acceleration about three axes on a configurable scale of +/- 2 g, 4 g, 8 g or 16 g (where 1 g is the acceleration due to gravity near the Earth's surface, equal to about 9.8 m/s2) about three axes. Both SparkFun and Adafruit sell breakout boards for the ADXL345 (https://www.sparkfun.com/products/9836 and http://www.adafruit.com/product/1231). We'll demonstrate with the SparkFun board, but the Adafruit board will function just the...

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Learning Beaglebone Python Programming
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