741 Based Light Sensor: CDS photocell used for light/dark controlled relay
Casio QV 200 Digital Camera Cable: Lose your cable? Build it yourself and save $29. Fits many QV models.
Infrared Remote Control Shutter Release System:
Simple Train Detector: Train Detector using ambient light and a photocell
Second to 8.5 Minute Low Frequency Clock (Intervalometer for Time-Lapse Photography): This circuit example highlights the use of the LTC6991 in a intervalometer for time lapse photography. In this example the LTC6991 is configured as a self-resetting circuit and generates a fixed time pulse from 8s to 64s.
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