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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

We now need to make our tShirtLED.py program run automatically when we switch our Pi Zero on. We are going to do this in the same way we did in the previous chapters:

First, we must make the Python program we just wrote executable:

chmod +x ./tShirtLED.py

Now, we will create our service definition file by typing this:

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

Now, type the definition into it:

[Unit]
Description=tShirt LED Service
After=multi-user.target

[Service]
Type=idle
ExecStart=/home/pi/WearableTech/Chapter3/tShirtLED.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/tShirtLED.service
sudo systemctl daemon-reload
sudo systemctl enable...
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