On interval download picture (from a live webcam url for example) and use it as a wallpaper
This is a python3 coded version
Create a script.sh or type python3 wwid.py
3 variables to adjust (within wwid.py file) :
url = 'http://www.tierradelfuego.org.ar/webcam/ima/2014/06/20140624-021.jpg'
dossier = "/home/pi/Pictures/wallpaper"
intervalle = 900