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shutter_speed_tester.JPG
Thumbnail image for circuito shutter speed tester.JPG

Pablo shows off his simple hack for testing the shutter speed of the old cameras he restores: A phototransistor from an old computer mouse, a battery, a flashlight, and a mono audio plug to his computer’s microphone port. He records the pulse in a simple audio recording utility and measures the time between the peaks. [Thanks, Billy Baque!]

Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I write for MAKE, serve as Technical Editor for MAKE magazine, and develop original DIY content for Make: Projects.


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