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.

First we will create our service definition file:

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

Now, type the definition into it:

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

[Service]
Type=idle
ExecStart=/home/pi/WearableTech/Chapter6/Adafruit_DotStar_Pi/ledBag.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/ledBag.service
sudo systemctl daemon-reload
sudo systemctl enable ledBag.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, you should see your LED matrix start to display your patterns. When you want to stop your display from running, you can press...