Camera Trip Circuit

Posted on Jun 26, 2012

This circuit was used to trip a camera shutter. Grounding pin 2 of U1 makes pin 4 of U1 go high. This triggers both tim

Camera Trip Circuit
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ers of dual timer Ul. One output holds reset (pin 4) of U1 low to keep U1 from accepting another trigger, depending on the time constant of R7 and C3. This prevents camera film waste. The other timer is used to generate a 1/2-second pulse to drive U4 and Ql, the relay driver. K1 triggers the camera.

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