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d.i.y. High-Power, Swappable-Head, UV/IR/Visible LED Flashlight with Intensity Control

I urgently needed a high-intensity UV/IR/visible light source for a work-related industrial inspection project, so this weekend I recruited Abigail to help me build a 10W LED flashlight that features swappable UV/IR/visible heads.  We decided to document the build since this flashlight would fit nicely in a photographer’s kit for light painting, IR illumination, UV

 
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Spring in Shakespeare’s Country

I had some business meetings in England this week, and on my way back to Birmingham Airport I stopped in Stratford-Upon-Avon to see the houses where Shakespeare was born and died.  Warwick Castle was also along the way, so I stopped briefly to take a few pictures before sunset.

 
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d.i.y. Gyroscopic Camera Stabilizer that Really Works!

One of my current work-related projects required me to buy some gyroscopes for prototyping.  I purchased some of the beautiful, motor-driven demonstration gyros made by Glenn Turner at www.gyroscope.com. Also as part of the project, I came across the professional-grade (and professionally priced, starting at $1,600) gyroscopic camera stabilizers made by Kenyon Laboratories.  These devices

 
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Crazy Pacemaker Hack: d.i.y. High-Speed Photography

This is a hack that combines three of my favorite passions: pacemakers, photography, and coffee! I took this photograph by feeding the output of an infrared barrier to the atrium input of an old DDD pacemaker, setting an appropriate AV delay, and using the ventricular output to trigger a camera flash (via a optoisolator).  In

 
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