Light detector sensor: Building a simple circuit | Arrow.com
Building a Simple Darkness Detector Circuit using LDR
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I'm making a simple dark sensor project with a light dependent resistor (LDR) and I want to replace the LED with a buzzer but it doesn't work - Electrical Engineering Stack Exchange
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MakingaLight / Dark Sensor
Light Sensor and Darkness detector circuit using LDR and Transistor
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Simple LDR Circuit Diagram for Darkness Detecting LED using 555 Timer IC