In this lesson we learn how a photoresistor works. We look at the solid state physics that allow the resistance to change with changing light levels. We then make a simple project where the arduino switches LEDs based on whether or not there are lights.

You can get the kit I am using for this series at the following link:

https://amzn.to/2I7N4Ek

Also, you can get the Mastech Digital Voltmeter I am using here:

https://amzn.to/2Ks9nHN

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