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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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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

Making our program start automatically

As with our previous projects, we now need to make our program start as soon as we switch our Pi Zero on:

Now, we will create our service definition file; type this:

sudo nano /lib/systemd/system/twitterTshirt.service

Now, type the definition into it:

[Unit]
Description=Twitter TShirt Service
After=multi-user.target

[Service]
Type=idle
ExecStart=/home/pi/WearableTech/Chapter5/ledTshirt.py

[Install]
WantedBy=multi-user.target

Save and exit Nano by typing Ctrl + O, followed by Enter, and then Ctrl + X. Now, change the file permissions, reload the systemd daemon, and activate our service by typing this:

sudo chmod 644 /lib/systemd/system/twitterTshirt.service 
sudo systemctl daemon-reload
sudo systemctl enable twitterTshirt.service

Now, we need to test if this is working, so reboot your Pi by typing sudo reboot, and then when your Pi Zero restarts...

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