A very simple device but maybe someone is interested in this type of application. The idea is to shot cameras and flashes according to the inputs of different sensors.
A typical example will be wait until a wild animal crosses a IR barrier, then open the shutter of two cameras, then fire some flashes, then keep the shutters open for some minutes to capture ambient light. All that can be done with timers but the arduino allows much more flexibility without having to use a display since it can be connected to the computer.
First, I used the device to measure the time that a D200 needs to open the shutter.http://frikosal.blogspot.com/2007/10/el-controlador-fr2-y-la-medida-del.html
Cameras and flashes are controlled with optocouplers.
Please don't be too hard with me, I knew about arduino about two-three weeks ago