DropCam – High Speed Photography

Inspiration for this project came from a MakeZine project: http://makezine.com/projects/high-speed-splash-photography-with-arduino/

Using a lightstand as a base, this Lego build was positioned above a glass bowl filled with water.  An Arduino Uno board controlled the camera shutter, a flash, and the Lego ‘Dropper’.  The time delay between the drop and the flash trigger was entered into a laptop.  The results can be seen at: https://flic.kr/s/aHskhKLsh9.  A video of the rig in action is shown below.

[youtube https://www.youtube.com/watch?v=eUHIDsJw1gM&w=420&h=315].

The camera and wireless triggers were controlled via a 4N35 Optocoupler circuit (keeping the Arduino and the equipment completely isolated).  The shutter speed was quite slow (~1/10s).  This was due to the inconsistent shutter lag that plagued the operation at speeds faster than 1/10s.  No problem though, the flash stopped the motion better than the shutter could have.

Don’t mind the colour-clashing lego…

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