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Wearable-Tech Projects with the Raspberry Pi Zero

You're reading from   Wearable-Tech Projects with the Raspberry Pi Zero Create imaginative, real-world wearable tech projects with the Rapsberry Pi Zero

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Product type Paperback
Published in Jul 2017
Publisher Packt
ISBN-13 9781786468819
Length 184 pages
Edition 1st Edition
Languages
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Author (1):
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Jon Witts Jon Witts
Author Profile Icon Jon Witts
Jon Witts
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Table of Contents (10) Chapters Close

Preface 1. About the Raspberry Pi FREE CHAPTER 2. Scrolling LED Badge 3. Sewable LEDs in Clothing 4. A Motion-Reactive LED Cap 5. A Tweet-Activated LED T-Shirt 6. An LED Laptop Bag 7. Creating Your Own Pedometer 8. Creating Your Own Heart Rate Monitor 9. Creating Your Own GPS Tracker

Writing our program

Now that we have set up, tested, and installed all of the hardware into our cap, we can begin writing the program for it. Connect your Pi Zero to a power source, and then connect to it over SSH.

Understanding our accelerometer readings

Before we jump straight into writing our program, it is probably worth looking at the readings from our accelerometer in a little more detail. If you look closely at the ADXL345 board, you will see that it has two arrows and circle printed on it labelled as x, y, and z respectively. These indicate the axes through which we can measure the movement of the board in relation to the Earth's gravitational pull. This diagram shows a little more clearly how these relate to...

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