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0:24
YouTube
SparkFun Electronics
How a Photoresistor Works
Ever wonder how circuits can “see” light? In this clip from the SparkFun Inventor’s Kit for MicroPython, we explore how a photoresistor, also called an LDR (Light Dependent Resistor), changes its resistance based on the amount of light hitting it. When light increases, the photoresistor’s resistance decreases. When it gets darker, the ...
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