Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
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

Arrow left icon
Product type Paperback
Published in Jul 2017
Publisher Packt
ISBN-13 9781786468819
Length 184 pages
Edition 1st Edition
Languages
Arrow right icon
Author (1):
Arrow left icon
Jon Witts Jon Witts
Author Profile Icon Jon Witts
Jon Witts
Arrow right icon
View More author details
Toc

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

Creating our electrical circuit

Before we go any further with this project, we need to talk a little bit about power for our DotStar LED strip. DotStar LEDs have a very specific power requirement; if there is not enough power, you will not be able to see them clearly; and if there's too much power, you risk damaging your LEDs. To complicate matters further, we need our power source to be portable in this project, so we will need to make use of batteries of one kind or another. Due to the exacting power requirements of the DotStar LEDs, we will also need to use some electronics to allow our Pi Zero to control DotStar LEDs.

DotStar LEDs are rated as 5V devices. Including a +- 10% tolerance gives us a safe working voltage range of 4.5V to 5.5V to power our DotStar LEDs. Now, you may ask why we don't just use the 5V line from the Pi Zero to power the LED strip? The reason...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime
Banner background image