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Camera Circuits
Camera Circuits:  #'s - B       C       D - K       L - Z

 

Last Updated: October 24, 2017 02:54 PM

Circuits Designed by Dave Johnson, P.E.

Timer for Darkroom Camera Shutter 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 . . . Hobby Circuit designed by David A. Johnson P.E.-June, 2000

Xenon Photoflash Controller This 9v battery powered circuit is designed for remote control flash needs.  A charge control circuit turns off the high voltage generator when the photoflash capacitor is fully charged.  A neon lamp is included to indicate when the system is ready to flash. . . Circuit by Dave Johnson P.E.-June, 2000


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Simple Circuit Helps to Protect a Vehicle-Reverse Camera 10/06/11  EDN-Design Ideas Add a delay to prevent short power pulses as you shift through reverse.__ Circuit Design by Aruna Rubasinghe

Simple Circuit Motion Detecting camera using PIR passive infrared A simple automatic motion-detection Digital Camera. __ Designed by Collin Mitchell

Simple Circuit phototimer controls load 04/18/02 EDN-Design Ideas In industrial and home applications, the need sometimes exists for a device that, after activation by some physical effect, such as light, temperature, or sound, switches a load on for a predetermined time.  The load, such as a lamp, motor, solenoid, or heater, usually derives its power from the ac line__ Circuit Design by Abel Raynus, Armatron International, Melrose, MA

Simplery for cellular-telephone/camera-flash illumination 05/27/04  EDN-Design Ideas Successfully implementing flash lamps involves understanding numerous practical considerations.  Next-generation cellular telephones will include high-quality photographic capabilities.  To support their improved image sensors and optics, they will need high-quality "flash" illumination, which requires special design attention.  This lighting is crucial for yielding good photographic performance and requires careful consideration.__ Circuit Design by Jim Williams, EDN's most revered contributor, passed away in June 2011 after a stroke.  He was 63.

Slave Flash Trigger This is the Richard R.  Bucciarelli Slave Flash Trigger circuit, which can be built entirely from Radio Shack parts.  It senses a camera flash and will trigger another flash that has some sort of input conection that one shorts to trigger a flash. __ Designed by Don Klipstein

Slave Flash Trigger for Digital Cameras The synchronizer ensures a contact-free, optical synchronization of external photographic flashguns.  The triggering of the external flash is derived from embedded flashes of a camera.  It can be used for both digital and "analogous" cameras or for a remote synchronization of the actual flash units.  Its use is optimal especially with digital cameras (DC), where extraordinary adaptability for different systems will stand out.  It is capable of eliminating the effect of any measuring pre-flashes.  The synchronizer thus perfectly fulfils the role of a device often called the Slave Flash Trigger (SFT) __ Designed by © Pavel Janko

Slave flash trigger with counting logic Does your camera's flash operate in red-eye reduction (multiple flash) mode only? This clever unit counts the number of "pre-flashes" before triggering a slave flash unit. __ Designed by Jim Rowe

Smart' Slave Flash Trigger Does your camera's flash operate in red-eye reduction   (multiple flash) mode only? This clever unit counts the number of "pre-flashes" before triggering a slave flash unit.___ SiliconChip

Speed Controller for Film Projectors Do you have old family movies on film? Have you watched them lately? You may be shocked by how much they have deteriorated over the years.  They need to be transferred to DVD before the film deteriorates to the point where it is unwatchable.  Video conversion is not as straightforward as you might think but this simple project enables you to do it.___ SiliconChip

Solar Powered Infrared 1W Security Camera Illuminator Many security cameras are equipped with an array of infrared LEDs to illuminate an area in front of the camera with invisible light for night time surveillance.    However, there are times when a remote area, well away from the camera, needs additional infrared light.    The circuit below uses a modified solar powered path light to bathe a fairly large area with 850nm infrared light. . . Circuit by David Johnson P.E.-June, 2014

Solar Powered Nestbox CCTV Camera Observe wildlife inside a nestbox with a solar powered wireless CCTV camera. __ Designed by REUK-Renewable Energy UK website

Squeaker lure To draw animials to the camera.  Record custom sounds! __ Contact: archilochus57 @ yahoo.com

Stop Action 3D-Photography using an audio flash trigger This circuit and it's accompanying directions and hints was originally posted on the InterNet newsgroup "rec.  photo" by Alan Killian. __

Surveillance using Raspberry Pi Camera This surveillance system detects motion of any object within its cameraís range, captures the image and stores it in Raspberry Pi.  You can retrieve images from Raspberry Pi any time.  Since...___ Electronics Projects for You

Synchronize Sensor & Cameras 10/21/10 EDN-Design Ideas Trigger circuits provide measurements and images at the right time.__ Circuit Design by Shih-Jie Chou, Rui-Cian Weng, and Tai-Shan Liao, National Applied Research Laboratories, Hsinchu, Taiwan

Time-lapse photography with a QuickCam Something I've wanted to do for quite some time is a time lapse movie of a static view, spanning an entire year.  It could be presented in a number of ways, for example a fast 12-second (30fps) view of one exposure at noon every day, or a longer sequence covering all the daylight hours, equalized for brightness, or an even longer one covering all hours.  Also I would want to make a 2-dimensional graphic, 365x240 pixels, one for every 10 minutes of the year, with the pixel colour being the average colour of a small patch of sky. __ Designed by Markus Wandel

Time-Lapse Photography with Raspberry Pi 3 This project aims at developing a simple time-lapse photography device with Raspberry Pi 3 and Pi camera.To get the most out of nature without tiring yourself, time-lapse photography is the best...___ Electronics Projects for You

Timer for Darkroom This is a circuit for darkroom timer that can produce musical tones after an interval of one second. __ Designed by © EFY Enterprises Pvt. Ltd.

Timer for Darkroom Camera Shutter 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 . . . Hobby Circuit designed by David A. Johnson P.E.-June, 2000

Universal Exposure Timer & Event Counter This page is the result of a lot of effort over the past couple years to develop a quality, inexpensive device to test shutters on the classic film cameras that I have been using.  The latest design I have developed uses a micro-controller to time and capture the events and upload to a computer with a serial interface.  It turns out that with a simple plug in sensor, I have come up with several potential alternate uses for the exact same design __ Designed by Mike  last name not found

Using an Apple II+ Computer as a Flash Intervalometer Much of the information contained herein was originally published as "High-Speed Photography with Computer
Control", L.M.  Winters, The Physics Teacher 29, 356 (1991). __

Video switcher Monitoring several cameras on one monitor is usually done in one of two ways:  divide the screen into sections and show them all at once, or time sequence the cameras onto the whole screen. __ Designed by Luhan Monat-Mesa Arizona

Webcam View Illuminator By setting up a webcam view illuminator over your laptopís webcam your online conversations can become more enlightening.  This clip-on light improves the quality of webcam photos and videos in low-light...___ Electronics Projects for You

Wi-Fi Embedded Webcam This project is built around an MRF24WBOMA Wi-Fi module, a PIC microcontroller and a camera module using the TCP-IP protocol.  The camera captures live video from a remote location, which is...___ Electronics Projects for You

Wireless Camera In general, avoid wireless cameras that transmit video, especially on 2.4 GHz.  They tend to interfere with wireless routers.  On the other hand, there are excellent wireless cameras that will work with your wireless router.  Here's a picture of our hallway from a WiFi camera that cost under $100 __ Contact: Charles Wenzel of Wenzel Associates, Inc.

Xenon Photoflash Controller This 9v battery powered circuit is designed for remote control flash needs.  A charge control circuit turns off the high voltage generator when the photoflash capacitor is fully charged.  A neon lamp is included to indicate when the system is ready to flash. . . Circuit by Dave Johnson P.E.-June, 2000

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Camera Circuits:  #'s - B       C       D - K       L - Z

 


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