Camera and flash trigger module using arduino

Here we go again, here is a picture of the camera and flash trigger module I made for my arduino photographic projects: It includes three 4N26 optocouplers. One (first one from the left side) to trigger a flash, as I did in the arduino controlled flash trigger project; and two more for triggering my Canon EOS 40D camera. The trigger mechanism is quite simple in modern EOS cameras, they simply have three pin ...

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