To make a sound activated camera trigger the main thing you need is a camera that accepts an external trigger.
The camera I’m using for this example is a Samsung NX1000 Smart Camera. The camera is activated when the external trigger contacts are shorted to ground; so the circuit we’re making shorts a signal to ground whenever there is a “loud” noise.
•SimpleCircuit Microphone Board
•SimpleCircuit N-Channel MOSFET
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