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Author Message   Richard_cook Tinkerer Username: Richard_cook Post Number: 1 Registered: 02-2010 Rating: N/A Votes: 0 Posted on Friday, February 19, 2010 - 08:22 am:    Elektor magazine have published a design for a shutter timer. http://www.elektor.com/magazines/2006/january/shutter-time-meter.58018.lynkx You can pay to download the article and buy a PCB or if you are an electronics engineer you may be able to arrange the parts in the list into the required circuit diagram.