Arduino LDR Light Dependent Resistor Guide

photoresistorwiring01

A Photoresistor or Light-Dependent Resistor (LDR) is a light-controlled variable resistor. The resistance of a Photoresistor decreases with increasing incident light intensity.

Requirements

Wiring : 

photoresistorwiring01

The resistor should be about 10K  to protect your Arduino.

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