paparazzi/paparazzi — pull request #480 by gtoonstra (2013-07-17 01:06:35+00:00)
Title: CHDK script for camera trigger and shutdown through simple 5v USB pulses.

Here's the script which shows how to trigger and shutdown a camera using two pulses of different length. Some cameras do not save the focus distance, so this script can pre-initialize the camera correctly every time at startup.