Details:
This is a BH1750FVI light intensity sensor module with built-in a 16 bit AD converter generating digital signal. The data from this module is light intensity in lx (lux meter).

Here are some lx examples:
  • Night: 0.001~0.02;
  • Moonlight night: 0.02~0.3;
  • Cloudy indoor: 5~50;
  • Cloudy outdoor: 50~500;
  • Sunny indoor: 100~1000;
Features
  • Switchable Voltage: 4.5V~6V or 3.3V
  • I2C bus Interface with 2 alternative address (f/s Mode Support)
  • Spectral responsibility is approximately human eye response
  • Wide range and High resolution (1 ~ 65535 lx)
  • Light source dependency is little. (ex. Incandescent Lamp. Fluorescent Lamp. Halogen Lamp. White LED. Sun Light)
  • Adjustable measurement result for influence of optical window (It is possible to detect min. 0.11 lx, max. 100000 lx by using this function.)
  • The influence of infrared is very small.
  • Small measurement variation (+/- 20%)
Specification

Operation on this module is pretty easy. We supply sample code.

Address of this module can be changed. By default, the address is "0100011". You can connect the solder bridge in the ADDR box. Then the address becomes "1011100".

You can also do other configurations. For more information, you can refer to the datasheet.

Hardware Connection

Connect Arduino with this module:

Arduino | Module
5V < -- > VCC
GND < -- > GND
A4 < -- > SDA
A5 < -- > SCL

Commonly Asked Questions:

Q1. Why are these called "Arduino Compatible"?
A1. The Arduino group demanded us to remove their logos and rename these products so that they do not lead customers to believe they are the same units sold by Arduino.
 
Q2. Are these real Arduino's, then?
A2. We cannot answer that question without starting a war :(. Officially, the answer is we do not know.
 
Q3. Are these 100% compatible with the "normal" Arudino's?
A3. Yes, they really are completely compatible with "normal" Arduino's. Build quality looks the same and everything (studio, library, tools, etc) just works. Just read the reviews here, here, here, and here.
 
Q4. What if I'm still concerned about the missing logos and about this being named as "Arduino Compatible"?
A4. If you're still in doubt, please buy from Arduino's official dealers. Yes they are more expensive, but if you're still worried we'd rather not take your order. We do not make these afterall and we are providing all the information we know. Don't kill the messenger.
Specifications:
Electronic Components
Architecture Arduino
Input Voltage 3.3/4.5-6 -volt
Signaling Type I2C
Package
Package Type OEM
Dimensions
Depth 15 mm
Height 10 mm
Product Weight 4 g
Width 32 mm
FastTech
Date Listed 10/2/2012
SKU 1012006
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This item is covered by FastTech's Standard Return Policy:

Return for refund within: 45 days (details)
Return for replacement within: 6 months (details)

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