“Ever wanted to capture lightning on photo? Maybe this camera trigger will help you make incredible images. Sorry, it will not help you with the composition of your photo, the sensor sensitivity, shutter speed, aperture or whitebalance settings of your camera, but it will hit the shutterbutton as fast as possible when the lightning flash occurs.
This trigger is intended for cameras which can be controlled via a switch based remote control. I build it for my Canon EOS camera.
As a bonus it can be used as a droplet detector.”