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Wearable-Tech Projects with the Raspberry Pi Zero
Wearable-Tech Projects with the Raspberry Pi Zero

Wearable-Tech Projects with the Raspberry Pi Zero: Create imaginative, real-world wearable tech projects with the Rapsberry Pi Zero

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Wearable-Tech Projects with the Raspberry Pi Zero

Scrolling LED Badge

In our first full project, we are going to make ourselves a badge that connects back to our Pi Zero. The badge itself will be made from a board, which contains a total of 119 individually addressable LEDs! The board is made by Pimoroni in the UK and is called a Scroll pHAT HD. The board comes with a female header, which normally you would solder onto the board to allow it to sit directly on top of your Pi Zero. However, we will adapt the board slightly so that we can conceal our Pi Zero and battery away out of sight and attach the board to an item of clothing as a badge.

We will look into the Python library, which Pimoroni supplies with the Scroll pHAT HD and try out a couple of different things that we can do with it.

We will finish our project off by installing a power-off switch to our Pi Zero, adding it into the official Pi Zero case and powering the whole...

What we will cover

In this chapter, we will cover the following topics:

  • What parts we will need to complete this project
  • How to connect up the Scroll pHAT HD to our Pi Zero
  • Installing the software to control our Scroll pHAT HD and writing our custom Python program for it
  • Creating an off switch and an LED indicator for our Pi Zero, including writing the Python program for it
  • Installing all of our electronics into our case and setting the Scroll pHAT HD up, so we can wear it as a badge

First off, let's look at what we will need for this project.

The bill of parts

We will make use of the following things in this project:

  • A Pi Zero W
  • A Scroll pHAT HD
  • An official Pi Zero case
  • A portable battery pack
  • A push button switch
  • A micro LED board
  • Various cables to connect our parts
  • Cable terminal block
  • A sticky-backed badge pin
  • Cable shrink wrap
  • A hot glue gun
  • Solder and a soldering iron

Putting the hardware together

First off, we need to connect up our hardware correctly so that we can begin to write our program to display our scrolling LED message! Let's first look at the Scroll pHAT HD.

Wiring up the Scroll pHAT HD

As we are not using the female header to place the Scroll pHAT HD directly on top of our Pi Zero, we need to first find out which pins from the GPIO header of the Pi Zero are required to run the Scroll pHAT HD. Fortunately, we can quite easily access this information from the Raspberry Pi Pinout website at https://pinout.xyz/.

Once you have opened the web page, click on the Browse more HATS, pHATS and Add-ons link in the top-right corner of the page, and find the link for Scroll pHAT HD...

Installing and writing the software

Before we can begin testing, our Scroll pHAT HD and see what we can do with it, we need to install some software to our Pi.

First off, we need to ensure that the I2C interface on our Pi is enabled. Start your Pi up and connect to it via SSH. Now that you are connected, run the following command on your Pi to access the configuration tool:

sudo raspi-config

Now, select 5 Interfacing Options using your cursors keys to highlight the menu option and then pressing Enter. In the Interfacing Options menu screen, highlight P5 I2C, and press Enter as shown in the following screenshot. In the next menu, select Yes and press Enter, and then press Enter to select OK to confirm the message that the ARM I2C interface is enabled. Press Tab twice to highlight Finish and press Enter to exit the raspi-config program. Now, type sudo reboot now to reboot your...

Finalizing our hardware setup

Now that we have a working scrolling message on our Pi Zero, we need to look a little more at the hardware and how we will use this as a badge we can wear on our clothes. The first thing you will probably be thinking is that the two bare circuit boards of the Pi Zero, and the Scroll pHAT HD with all their cables between them do not make the best badge you have ever seen! But fear not, as this section of the project will get everything looking far neater and ready to go as a badge.

Wiring an off switch to our Pi Zero

We are going to solder two more pieces of hardware to our Pi Zero, which we will program to act as an off switch for our Pi Zero. This way, if we are using our Pi Zero out and about...

Putting it all together

So, now we have all of our hardware connected up and tested and we also have our software written and tested, however we still need to carry out a few more steps to complete our project. We need to install our Pi Zero in its case and attach our switch and LED to the outside of the case, and we also need to enable us to wear the Scroll pHAT HD as a badge.

Installing the Pi Zero into its case

We are going to make use of the official Pi Zero case in this project. It has a really easy access to the GPIO pin holes on the board and is nice and compact too. If you have a different case, then you should be able to adapt these steps to use that case instead.

To start with, you will want to disconnect the cables...

Summary

In this project, we have looked at an add-on piece of hardware for the Raspberry Pi and the Scroll pHAT HD; we also saw how we can adapt this to work in our projects. You also learned about sources of information about how we need to wire these add-ons to our Raspberry Pi computers if we are not using the standard hat method; this will come in useful in future projects too!

We then looked at how we can control the Scroll pHAT HD add-on board with some simple Python code. There is plenty of scope here for personalizing this project here, and we now know where to find the online documentation to learn what else this board can do.

Another important step covered was to make Python programs we write start automatically when we power up our Pi Zero. We did this twice just in this project, and this is something we will need to do for most of the remaining projects in the book...

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Key benefits

  • A practical and imaginative guide that exposes you to amazing wearable-tech projects
  • Create our own heart-rate monitor device and cool projects such as a Tweet-activated LED T-shirt
  • A practical guide packed with real-world, useful wearable-tech projects

Description

With Wearable-Tech Projects with the Raspberry Pi Zero, you will begin with learning how to install the required software for your upcoming projects. You will also learn how to control electronic devices with the GPIOZero Python library. Next, you will be creating some stylish wearable-tech projects such as a motion-reactive LED cap and a Tweet-activated LED T-shirt. Toward the end of the book, you will be creating some useful health and fitness wearable-tech projects; these will help you monitor your heart rate, track your movements with GPS, and count your footsteps with your own pedometer. By the end of the book, you will have created a range of wearable-tech projects and learned enough about your Raspberry Pi Zero that you should be able to adapt these projects further or come up with your own creations!

Who is this book for?

Everyone. While some prior knowledge of Python programming and use of the terminal on the Raspberry Pi would be advantageous, they are by no means necessary. Each chapter clearly sets the steps to be taken on your wearable-tech adventure. The first chapter assumes no prior knowledge to get your Pi Zero and you, up and running. The complexity of the electronic devices used, progress incrementally as you work through the chapters; there are clear steps to follow and pictures to help you at every turn along the way.

What you will learn

  • • Make use of your Raspberry Pi Zero to create wearable-tech projects
  • • Interface with electronic devices and use Python to control them; incorporate these into real-world, practical, wearable-tech projects
  • • Add LED devices to clothing and connect them to your Pi Zero
  • • Change how LEDs react based upon your movement or messages sent through Twitter
  • • Create a pedometer and heart rate monitor
  • • Create your own GPS tracker
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Publication date, Length, Edition, Language, ISBN-13
Publication date : Jul 14, 2017
Length: 184 pages
Edition : 1st
Language : English
ISBN-13 : 9781786468819
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Raspberry Pi
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Length: 184 pages
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ISBN-13 : 9781786468819
Vendor :
Raspberry Pi
Category :
Languages :
Concepts :

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Table of Contents

9 Chapters
About the Raspberry Pi Chevron down icon Chevron up icon
Scrolling LED Badge Chevron down icon Chevron up icon
Sewable LEDs in Clothing Chevron down icon Chevron up icon
A Motion-Reactive LED Cap Chevron down icon Chevron up icon
A Tweet-Activated LED T-Shirt Chevron down icon Chevron up icon
An LED Laptop Bag Chevron down icon Chevron up icon
Creating Your Own Pedometer Chevron down icon Chevron up icon
Creating Your Own Heart Rate Monitor Chevron down icon Chevron up icon
Creating Your Own GPS Tracker Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Full star icon Half star icon 4.5
(2 Ratings)
5 star 50%
4 star 50%
3 star 0%
2 star 0%
1 star 0%
Anne Feb 23, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I'm really enjoying working through this book and have completed a wearable tech item. I have read to the end of Chapter 3 so far and the explanations have been very clear.
Amazon Verified review Amazon
P. Brown Sep 16, 2017
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
Great book with well thought out and written projects. Glad i purchased it.
Amazon Verified review Amazon
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