GY-302 BH1750 Digital Light Intensity Sensor Module – I2C, 1–65535 Lux
The GY-302 BH1750 Digital Light Intensity Sensor Module is a compact, high-sensitivity ambient light sensor designed to measure illumination levels in lux. Built around the BH1750 sensor IC, it provides digital light readings through an I2C interface, making it easy to integrate with Arduino, ESP32, ESP8266, STM32, Raspberry Pi, and other compatible development boards.
With a wide light measurement range and low power consumption, this module is ideal for automatic brightness adjustment, smart lighting, home automation, weather stations, and IoT-based environmental monitoring projects.
Key Features
BH1750 Sensor IC: Designed for digital ambient light measurement.
Digital Lux Measurement: Provides illumination readings directly in lux.
16-Bit Digital Output: Delivers digital light intensity data without requiring an external ADC.
Wide Measurement Range: Supports light intensity measurements up to approximately 65,535 lux, depending on operating mode.
I2C Communication: Simple two-wire interface for compatible microcontrollers.
Low Power Consumption: Suitable for battery-powered and energy-efficient projects.
Human-Eye-Like Light Response: Designed to approximate the visible-light sensitivity of the human eye.
Low Infrared Influence: Helps provide useful ambient light measurements under different lighting conditions.
Compact PCB Design: Easy to install in embedded systems and DIY electronics projects.
Broad Compatibility: Suitable for Arduino, ESP32, ESP8266, STM32, Raspberry Pi, and other compatible platforms.
Technical Specifications
Product Type: Digital Light Intensity Sensor Module
Module Model: GY-302
Sensor IC: BH1750
Operating Voltage: 2.4V–3.6V DC
Typical Supply Voltage: 3.0V DC
Operating Current: Approximately 0.12 mA (typical; depends on operating mode)
Measurement Range: Approximately 1–65,535 lux
Accuracy: Approximately ±20% typical, depending on conditions
Communication Interface: I2C
Digital Output: 16-bit measurement data
Measurement Unit: Lux (lx)
Mounting Type: PCB module
Applications
Automatic light and display brightness control
Smart lighting and home automation
Indoor and outdoor light monitoring
Weather stations and environmental monitoring
Camera light metering projects
IoT-based lighting systems
Arduino and ESP32 sensor projects
Smart agriculture and greenhouse monitoring
Energy-efficient lighting control
Educational electronics and DIY projects
Compatibility
Compatible with suitable libraries and I2C connections on:
Arduino Uno, Nano, and Mega
ESP32 and ESP8266 development boards
STM32 microcontrollers
Raspberry Pi and other supported I2C platforms
Important: The sensor operates at 2.4V–3.6V. Check the breakout board's voltage compatibility and I2C logic levels before connecting it to a 5V controller. Some GY-302 boards may not include voltage regulation or logic-level conversion.
Package Includes
1 × GY-302 BH1750 Digital Light Intensity Sensor Module
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