SKU: SENS-3273
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Adafruit BH1750 Ambient Light Sensor Module - STEMMA QT/Qwiic

₹729.00 (Inclusive of all taxes)
Out of Stock

The Adafruit BH1750 is a 16-bit digital ambient light sensor module with a STEMMA QT/Qwiic connector, providing precise lux measurements from 1 to 65,535+ lux for Arduino, Raspberry Pi, and other 3.3V/5V microcontroller projects.

Features

  • ROHM Semiconductor BH1750FVI 16-bit digital ambient light sensor.
  • Wide measurement range from 1 lux to over 65,535 lux.
  • Standard I2C digital interface with selectable address.
  • Integrated STEMMA QT / Qwiic 4-pin JST-SH connector for plug-and-play use.
  • Onboard voltage regulator and level shifting for 3.3V or 5V system compatibility.

Out of stock

Description

The BH1750FVI sensor from ROHM Semiconductor utilizes a photodiode and a 16-bit analog-to-digital converter to deliver high-resolution ambient light intensity readings directly in lux. The module’s integrated signal conditioning circuitry ensures stable and accurate data across its full dynamic range, supporting various measurement modes for different resolutions and power consumption profiles.

Adafruit’s carrier board packages the sensor in the STEMMA QT form factor, incorporating a 3.3V regulator and logic level shifting. This design allows for seamless, solderless connection to a wide array of development boards, from 5V Arduino Uno to 3.3V Raspberry Pi and Feather controllers, simplifying integration into environmental monitoring systems, smart lighting controls, and display backlight management.

Key Features

  • High-resolution 16-bit digital output for precise light intensity measurement.
  • Wide operating voltage range (3V to 5V DC) with onboard power regulation.
  • Plug-and-play connectivity via standardized STEMMA QT / Qwiic 4-pin JST-SH cable.
  • Compact and durable PCB construction with mounting holes for secure installation.
  • Low power consumption with selectable measurement modes for optimized performance.
  • Direct lux output eliminates the need for complex calibration or calculations.

Applications

  • Automatic display backlight dimming in portable electronics and automotive dashboards.
  • Environmental light monitoring for smart home and building automation systems.
  • Agricultural and horticultural lighting control and growth chamber management.
  • Photography and imaging equipment for exposure metering and flash control.
  • Energy-saving systems that adjust indoor lighting based on ambient daylight.

Technical Specifications

Sensor ICROHM Semiconductor BH1750FVI
Supply Voltage3V to 5V DC
Measuring Range1 lux to 65,535+ lux
Output Resolution16-bit Digital
Communication InterfaceI2C (Default Address: 0x23)
ConnectorSTEMMA QT / Qwiic 4-pin JST-SH
Board Dimensions (LxWxH)25.3 mm x 17.7 mm x 4.5 mm
Board WeightApprox. 2.5 g

Frequently Asked Questions

What is the I2C address of the Adafruit BH1750 module?

The default I2C address for the BH1750 sensor is 0x23. Some libraries or configurations may also allow the use of an alternate address, 0x5C, by pulling the ADDR pin high. The Adafruit module typically uses the default 0x23 address for plug-and-play compatibility.

Can I use this sensor with both 3.3V and 5V microcontrollers?

Yes. The module includes an onboard voltage regulator and level shifting circuitry, making it fully compatible with both 3.3V systems like Raspberry Pi or ESP32 and 5V systems like Arduino Uno. Simply connect it using a STEMMA QT or Qwiic cable; no additional logic level converters are required.

How do I connect this module without a STEMMA QT/Qwiic connector?

If your board lacks a STEMMA QT/Qwiic port, you can use the breakout pins on the module's edge. Connect VIN to 3-5V, GND to ground, SCL to your microcontroller's I2C clock line, and SDA to the I2C data line. Ensure you also connect the ADDR pin if you need to change the I2C address.

What is the difference between the different measurement modes?

The BH1750 supports several modes: Continuous High-Resolution Mode (1 lx resolution, 120ms measurement time), Continuous High-Resolution Mode2 (0.5 lx resolution, 120ms), and Continuous Low-Resolution Mode (4 lx resolution, 16ms). There are also one-time measurement versions of each mode for reduced power consumption.

Package Includes

  • 1 x Adafruit BH1750 Light Sensor Module (STEMMA QT/Qwiic)

Additional Information

Weight 0.0025 kg
Dimensions 2.53 × 1.77 × 0.45 cm