A photo resistor is a light dependent resistor whose resistance decreases with the increase in the intensity of light striking it.
You can use it to detect the ambient light in the surrounding, detect shadows or use it as a part of a burglar alarm system.
One photoresistor comes in your Photon Kit.
Photon Kit
PHOTORESISTOR (1)
LED (1)
This general purpose 3mm red LED is great for getting started with your Photon. You can never have enough of them!
RESISTORS (2)
You get two 220-Ohm resistors in your Photon Kit. They are rated at 5%, 1/4 Watt.
