Minimal slideshow display for raspberry pi. Install the Arch Linux image to your SD card, boot the Pi with a display attached to the HDMI port, then run this to get set up. To customise: Copy your slides into /root/slides. Edit slide changing schedule by editing the root crontab. Edit /root/startup-slide to set the slide that displays on startup…

pi-projector.sh

#!/bin/bash
# From newly installed arch linux image
# Based on instructions from
# http://www.techrepublic.com/blog/opensource/how-to-create-photo-slideshows-with-as-little-software-as-possible/3716

# update and install requred packages
pacman -Syy
pacman -S fbida ttf-inconsolata

# Set timezone
ln -sf /usr/share/zoneinfo/Pacific/Auckland /etc/localtime 
echo "Pacific/Auckland" > /etc/timezone

# create new directory to hold slides
mkdir /root/slides
# something to get started with
wget https://www.dropbox.com/s/3s9d3y8poh52utg/720p-test.gif -P /root/slides
wget https://www.dropbox.com/s/bz4pcugzg4g15cv/pi-desktop.jpg -P /root/slides

# Add bash script to show image
cat > /root/play-slide <<EOF
#!/bin/bash
killall fbi
/usr/bin/fbi -noverbose -a -T 1 $1
EOF
chmod +x /root/play-slide

# Script to select the slide to show at startup
cat > /root/startup-slide <<EOF
#!/bin/bash
# Select a slide based on the time of day.

TIME=`date +"%H"`

case $TIME in
0[0-9])
  SLIDE="pi-desktop.jpg"
	;;
1[0-6])
	SLIDE="720p-test.gif"
	;;
*)
	SLIDE="pi-desktop.jpg"
	;;
esac

/root/play-slide /root/slides/$SLIDE
EOF
chmod +x /root/startup-slide

# Add cron jobs to schedule images
# @reboot triggers a bit early, we need to wait 15 seconds or so
cat > /root/cron-jobs <<EOF
@reboot	sleep 15 && /root/startup-slide
*/2 * * * *	/root/play-slide /root/slides/pi-desktop.jpg
1-59/2 * * * *	/root/play-slide /root/slides/720p-test.jpg
# etc
EOF
crontab /root/cron-jobs
rm /root/cron-jobs