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Triggering a Camera’s Flash with Sound and Light

Triggering a Camera’s Flash with Sound and Light
Update: Check out my latest Camera Axe project for a much more robust device that handles this or my store where I sell the Camera Axe. For those just wanting to see the pretty pictures, click here. This article focuses on making the sensors used to trigger a camera’s flash using a microphone or a cheap laser pointer. Since I’ve already described how to do the actual firing of a camera’s flash here I won’t focus on that part of this project today. There are a lot of places on the web that describe how to trigger a flash with an electrical circuit, but I feel that using a microcontroller like Arduino offers big benefits. For instance you can easily add new sensors, or even run multiple sensors at once. Now let’s talk about why we’re triggering the flash. Most SLR and DSLR cameras let you attach a cable to trigger the camera directly. When I’m using this flash trigger I work in a dim room and set my shutter speed to 10 seconds. Laser Sensor Here’s the circuit. Sound Sensor Flash Trigger

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