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Detail of BH1750 light sensor breakout board with pins and yellow connector-DFRobot product sku:SEN0097 image.
Fermion: BH1750 Light Sensor (Breakout)_1
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Fermion: BH1750 Light Sensor (Breakout)

$4.50
SKU: SEN0097
The BH1750 sensor measures light intensity in Lux with a built-in 16-bit AD converter, offering accurate digital output without complex calculations.
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    IntroductionSpecificationShipping List Review

    Introduction

    This is a BH1750 light intensity sensor breakout board with a 16 bit AD converter built-in which can directly output a digital signal, there is no need for complicated calculations. This is a more acurate and easier to use version of the simple foto resistor which only outputs a voltage that needs to be calculated in order to obtain meaningful data. With the BH1750 Light Sensor intensity can be directly measured by the luxmeter, without needing to make calculations. The data which is output by this sensor is directly output in Lux (Lx). When objects which are lighted in homogeneous get the 1 lx luminous flux in one square meter ,their light intensity is 1lx. Sometimes to take good advantage of the illuminant, you can add a reflector to the illuminant.So that there will be more luminous flux in some directions and it can increase the ilumination of the target surface. 
    For example
    • Night: 0.001--0.02;  
    • moonlightnight:0.02--0.3;  
    • cloudy indoor:5--50;
    • cloudy outdoor:50--500;
    • Sunny indoor:100--1000;
    • under the sunlight in summer afternoon: about 10*6 power; 
    • reading books for intensity of illumination:50--60;
    • home video standard intensity of illumination:1400.

    Specification

    Shipping List

    • BH1750 Light Sensor   x1 
    • 5 pin male header     x1

    Review

    KOUBELAN RICHARD.AKPAGNI Nov 08, 2025

    Great digital light sensor — accurate, stable, and easy to use! The BH1750 breakout provides direct lux readings over I²C, which makes integration with ESP32 or Arduino extremely simple. I used it in a smart lighting and weather station project, and it performed flawlessly under different lighting conditions. Much more precise than analog photoresistors, and very low power consumption. The board quality is solid, and DFRobot’s documentation makes setup quick. Perfect for IoT, automation, and environmental monitoring projects.

    KOUBELAN RICHARD.AKPAGNI Nov 08, 2025

    Excellent little light sensor! The BH1750 breakout works flawlessly and provides stable, high-resolution measurements in lux. I used it with an ESP32 via I²C — setup was simple and the readings are consistent even under variable lighting. It’s much more accurate than basic analog photoresistors and perfect for smart lighting, environmental monitoring, or IoT automation projects. The breakout board is compact and well-soldered, making integration quick and reliable. Great value for anyone looking for precise digital light sensing in their projects.

    Marco.Schreiner Mar 10, 2024

    Very good sensor - works good for me

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    Fermion: BH1750 Light Sensor (Breakout)
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