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MatchBox cars as a switch | by atduskgreg
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MatchBox cars as a switch

I tied conductive thread to the metal undercarriages. When they crash into each other it closes a switch, which the arduino detects and demonstrates by blinking an LED (orange, foreground).

 

This was an early stage of testing for my Crash Photography project:

 

An arduino detects the collision of the matchbox cars and flashes a light at that exact moment in front of the open camera shutter to capture an exposure.

 

Full write-up here: Crash Photography with Arduino and MatchBox Cars

 

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Taken on September 14, 2009