pi-cctv is a script for use with your raspberry pi and raspberry pi camera module. When ran it will continually take image captures with the camera module (placing them in an 'images' folder). Images which appear to be at night time will be disgarded to save on disk space.
If you're using Wifi you'll want to make the raspberry pi reconnect when it drops:
cd /etc/ifplugd/action.d/
mv ifupdown ifupdown.original
cp /etc/wpa_supplicant/ifupdown.sh ./ifupdown
sudo reboot
pip install picctv
picctv -o /media/ext1/