I've been always fascinated with sunrises and sunsets, so I built a picam to take timelapses:

https://hackaday.io/project/28694-yet-another-raspberry-pica...

youtube channel: https://www.youtube.com/channel/UCkH0MTHo-LlxOL_W_3Qeq9Q

https://www.flickr.com/photos/bentretea_picam/