This is a nifty little module containing a BH1750FVI Lux Sensor, in short, it allows you to obtain the intensity of the light it sees in lux.
5v tolerant, I2C, connecting it to your Arduino is as simple as VCC, GND, A5 to SCL and A4 to SDA.
Here is a little Arduino library for this device...
github.com
With this library the programming to get the current lux reading is basically 2 lines!
BH1750 lightMeter;
uint16_t lux = lightMeter.readLightLevel();
2 lines of code and you have a lux reading in a variable ready to do whatever you want with, super sweet!
Give it a go!
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