Time-lapsing the invisible is an observation tool that can be used by researchers to collect meaningful data in the field of development planning or by any member of a specific community that wants to understand patterns of movement, social activities, physical transformations etc. over a specific period of time. The concept develops from a personal need to extend periods of observation. An affordable camera in the market allows you to create timelapses taking one picture every 1, 2, 5, 10, 30 or 60 seconds, this is an amazing feature. If you import those pics into a basic video editor (already installed in most computers and laptops) and retime them to at about 10 pics per second, the result is an amazing piece of data that immediately helps in identifying patterns. By hacking a standard camera that has the time-lapse feature built in, what I have achieved is to expand the timelapse beyond the 60 seconds and manipulate the time according to my specific need of observation. For example, I wanted to observe for a period of 4 weeks. Now the camera switches on and off itself and a light sensor attached to the system controls the camera to take pictures just during daylight. An amazing resources to understand the process was this blog 033310b.netsolhost.com/Arduino/?p=18
This video is made out of pictures taken by the camera during the CruftFest exhibition. The intervals between pics are 5 secs over 70 secs then the camera goes off for 70 secs and switch on again.