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Photography Circuits
Last Updated on:
Monday, October 26, 2009 05:10 AM |
| Circuits Designed
by Dave Johnson, P.E. : |
DARKROOM
CAMERA SHUTTER TIMER
This circuit was designed to control a film exposure shutter for a darkroom. It has 8
time steps ranging from 0.35 seconds to 4 seconds. It is activated by a foot switch
and draws power from an external 12-volt DC supply. |
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Links to electronic circuits,
electronic schematics, designs for engineers, hobbyists, students & inventors:
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Casio QV-200 Digital Camera Cable. - Lose your cable? Build it yourself and
save $29. Fits many QV models. (added 7/03) |
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Darkroom Camera Shutter Timer - This circuit was designed to control a film
exposure shutter for a darkroom. It has 8 time steps ranging from 0.35 seconds to
4 seconds. It is activated by a foot switch and draws power from an external
12-volt DC supply. ….(designed by David A. Johnson) |
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Lightning Activated Camera Shutter Trigger - This circuit is used to trigger a
camera's electronic shutter circuit when a flash of lightning is present. This
circuit would also work for photographing fireworks displays or other events
involving flashes of light. (added 4/02) |
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Lightning Detectors - The following circuit is an improved version of my
original Lightning Detector designed to run on a 5 volt supply...(circuit added
05/05/05) |
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