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A passive device that converts light photons into an electrical signal output. Examples include photodiodes and photo transistors.

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I'm making a simple dark sensor project with a light dependent resistor (LDR) and I want to ...

I replaced the resistors with small ones to give the buzzer more current,but itstill doesn't work. I checked my buzzer and it's working fine. The circuit works perfecly with the LED in the breadboar …
Ahmed Lotfy's user avatar