BH1750 16-bit Light Intensity Measurement Module

The BH1750 Light Intensity Module is a precision digital ambient light sensor breakout board designed for measuring illumination levels in lux. Based on the BH1750 integrated circuit from ROHM Semiconductor, this module provides accurate light intensity readings via an I²C interface, making it ideal for hobbyists, educators, and professionals developing light-sensitive applications. Its compact form factor and straightforward operation make it perfect for projects ranging from home automation to environmental monitoring systems.

Key Features:

• Compact breakout board design with mounting holes for secure installation in projects
• I²C digital interface for easy integration with Arduino, Raspberry Pi, and other microcontrollers
• Pre-soldered header pins included for breadboard-compatible prototyping
• Operating voltage: 3.3V to 5V, compatible with most modern development boards
• On-board pull-up resistors simplify I²C bus configuration
• Four clearly labelled connection points: VCC, GND, SCL, and SDA
• BH1750FVI sensor IC providing calibrated digital output
• Measurement range: 1 to 65,535 lux with high resolution
• Spectral response closely approximates human eye sensitivity
• Selectable measurement modes: continuous or one-time measurement
• High-resolution mode: 1 lux resolution (measurement time typically 120ms)
• Low-resolution mode: 4 lux resolution (measurement time typically 16ms)
• I²C address: 0x23 (default) or 0x5C (configurable via ADDR pin)
• Low power consumption: typical 0.12mA in active mode
• Wide illuminance measurement capability suitable for both indoor and outdoor applications
• Operating temperature range: -40°C to +85°C

Applications

• Home Automation: Automatic lighting control systems and smart curtains based on ambient light levels
• Educational Projects: Teaching light measurement principles and sensor interfacing techniques
• Environmental Monitoring: Weather stations and agricultural applications requiring light intensity data
• Display Brightness Control: Automatic screen brightness adjustment for mobile devices and embedded displays
• IoT Devices: Light-sensitive smart home gadgets and energy-saving applications

Why Choose the BH1750 Light Intensity Module? The BH1750 Light Intensity Module offers exceptional accuracy and ease of use in a compact, affordable package. Its calibrated digital output eliminates the need for complex analogue signal processing, whilst the I²C interface ensures simple integration with your favourite microcontroller platform. Whether you're building your first light-sensing project or developing a sophisticated automation system, this module provides reliable performance backed by comprehensive community support and readily available code libraries.