Design News shows you how to make a “slave strobe” for your camera –
“Photography enthusiast Nick Pagazani was hindered by the range and fixed location of his camera’s flash. Since his camera has no connector for an external flash, he needed a light-activated slave trigger to fire a remote strobe. It had to ignore the pre-flashes used for red-eye correction and fire only on the main flash. His solution: Use a microcontroller to count pulses from a phototransistor and trigger the strobe at a switch-selectable count. Brighten up your shadowy background with this flashy accessory.” – Link.
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8 thoughts on “HOW TO – Make a “Slave Strobe””
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Cool stuff, but I wish he’d mentioned how much the parts cost.
Here are some similar projects i’ve collected-
http://www.xs4all.nl/~jjbrouwe/flash/1.html
http://www.fancon.cz/
http://home.rochester.rr.com/carlvogt/Strobe.htm
http://www.srelectronics.com/sa10.html
http://www.eio.com/repairfaq/sam/strbfaq.htm
To fix the range and location issues, an easy way to slave other flashes is through IR. You can turn your built-in flash into an IR signaller by putting an undeveloped piece of slide film in front of it.
two more-
http://www.rebeccahinden.com/hacks.html
http://www.diylive.net/index.php/2006/03/16/diy-disposable-camera-flash-slave/