Adafruit BH1750 Light Sensor – STEMMA QT / Qwiic



  • Adafruit
Availability: In Stock

The Adafruit BH1750 breakout board is an easy to use light sensor able to provide 16-bit measurements. The board is Qwiic / STEMMA QT compatible and is easy to work with!


SKU: SEN-162 Manufacturer: Adafruit Industries Mfg Part Number: 4681 Category: Tags: , , , , ,


This breakout board uses the BH1750 16-bit Ambient Light Sensor from Rohm. Because of how important it is to humans and most other living things, sensing the amount of light in an environment is a common place to get started when learning to work with microcontrollers and sensors. Should we turn up the brightness of our display or dim it to save power? Which direction should your robot move to stay in an area with the most light? Is it day or night? All of these questions can be answered with the help of the BH1750. It’s a small, capable and inexpensive light sensor that you can include in your next project to add the detection and measurement of light.

The BH1750 provides 16-bit light measurements in lux, the SI unit for measuring light, making it easy to compare against other values like references and measurements from other sensors. The BH1750 can measure from 0 to 65K+ lux, but with some calibration and advanced adjustment of the measurement time, it can even be convinced to measure as much as 100,000 lux!

Both STEMMA QT and Qwiic compatible, the BH1750 comes integrated with a voltage regulator and level shifting circuitry to allow it to be used with 3.3V devices, like a Feather M4 or Raspberry Pi, or 5V devices, such as an Arduino. Rather than working with the tiny contacts on the sensor, the PCB it’s packaged on breaks out all the pins to a standard 0.1″ / 2.54mm pitch header.


  • Measure from 0 to 65K+ lux
  • Qwiic / STEMMA QT Compatible

Package Contents

  • 1 x Adafruit BH1750 Light Sensor
  • 1 x 8 Pin 2.54mm Pitch Header

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  Difficulty Level

Soldering Skill: N/A
Prototyping Skill: Beginner
Programming Skill: Beginner

  Product Certifications

  Product Attributes

Weight: 5 g
Shipping Dimensions: 26 × 18 × 5 mm


Connector Type:

Qwiiic / STEMMA QT



I2C Address:


Input Voltage:

3 – 5VDC

Logic Voltage:

3.3V, 5.0V







  Warranty Policy

This product has a 30 Day Warranty from the date of delivery. The item must not be modified, abused, incorrectly hooked up, or used for purposes outside the original scope of design.

  Return Policy

This product is returnable Within 14 Days of delivery for a store credit. Item must be unopened, unused, and in re-saleable condition.

More Information:
For more information on our Warranty and Return Policies, please consult our   Terms of Service


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