Automate it

Cron

Once you've proven that the run works, and an image is sent to your epaper display, you can automate it by setting up a cronjob. Open crontab.

crontab -e

Add this entry so it runs every minute:

* * * * * cd /home/pi/waveshare-epaper-display && bash run.sh > run.log 2>&1

This will cause the script to run every minute, and write the output as well as errors to the run.log file.

systemd timer

Alternatively, you can use a systemd timer. There are example systemd units available to install a timer that starts a service every minute that runs the script. To achieve this, execute the following commands.

mkdir -p ~/.config/systemd/user/
cp utils/waveshare_epaper_display.service.example ~/.config/systemd/user/waveshare_epaper_display.service
cp utils/waveshare_epaper_display.timer.example ~/.config/systemd/user/waveshare_epaper_display.timer
systemctl --user daemon-reload
systemctl --user enable waveshare_epaper_display.timer
loginctl enable-linger