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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

Summary

In this chapter, we saw how we can attach analog sensors to our Pi Zero with the use of an ADC, and how we can add 5V sensors to our 3.3V Pi Zero with the use of a simple resistor-based voltage divider. We have also gone a bit further with our use of the Scroll pHAT HD by creating two different areas on our display, which update at different intervals.

The program for monitoring our heart rate introduces some more advanced mathematics to keep a track of the high and low pulses of our sensor, tracking the time between them, and calculating the average of a set of ten of these beats to calculate our BPM.

You can see a video of my completed heart rate monitor at https://www.youtube.com/watch?v=CaQMu6f1UJ8

In our next and final chapter, we will create our own GPS tracker, which we can use to log where and how far we move, while we are out and about!

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