How to use a Photoresistor (or photocell) - Arduino Tutorial

A photoresistor or photocell is a light-controlled variable resistor. The resistance of a photoresistor decreases with increasing incident light intensity. A photoresistor can be applied in light-sensitive detector circuits, and light- and dark-activated switching circuits. It's also called light-de...
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from Instructables: exploring - technology - robots http://ift.tt/1RYYatn

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