====== LDR =====

LDR stands for **Light Dependent Resistor**. 

It's a resistor whose value will vary according to the intensity of the light it receives.

===== Cabling =====

To connect it to an **analog** input on an arduino, it must be connected to a high value resistor (typically 100K Ohms).

The value read will range between  750 and 1023 for a strong light source received and less than 100 for obscurity.

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