Arduino Compatible Digital Light Sensor (BH1750FVI)

This is a digital light sensor that can be used to precisely measure the ambient light level.  The sensor has a 16 Bit AD converter so it outputs a digital signal that can be read using the Arduino's serial connections.  It measures light to a similar level as the human eye so is great for home automation projects. It is very easy to implement into your project as an Arduino library for this sensor already exists.

If you are looking for a way to make this sensor work then we have found this very good instructacble here that includes a link to a Library file.

Key Features:

Based on the BH1750FVI light intensity Sensor
16 bit AD converter takes an analog signal and turns it into a digital signal
Output is in LUX (a measure of light intensity)
Input voltage 3.3 to 6 volts
I2C bus Interface with 2 alternative address (f/s Mode Support)
The sensor is very robust to interference from different light source types and infra-red light
Sensor range: 0.11 Lux to 100,000 Lux

Dimensions: Depth 15mm, Height 10mm, Width 32mm, Weight 4.0g