Ambient Light Intensity Sensor Module GY-302 BH1750

Overview

The GY-302 BH1750 Ambient Light Intensity Sensor Module is a compact, high-precision digital sensor module designed to measure ambient light levels. Powered by the BH1750 light sensor IC, the module provides direct lux readings over an I2C interface, making it an excellent choice for automation, energy-saving systems, environmental monitoring, and IoT projects.

Key Features

• High precision ambient light measurement with direct lux output
• I2C communication for quick and reliable connection to microcontrollers
• Wide measurement range: 1 to 65,535 lux for both low-light and bright environments
• Low power consumption suitable for battery-powered systems
• Compact design for easy mounting in projects and enclosures
• Works seamlessly with Arduino, Raspberry Pi and other development boards

Technical Specifications

• Sensor IC: BH1750
• Interface: I2C (digital output)
• Typical I2C addresses: 0x23 (default) and 0x5C (depending on module wiring)
• Measurement range: 1 to 65,535 lux
• Resolution: approximately 1 lux
• Supply voltage: 3.3V to 5V (module dependent; check module labels)
• Connections: VCC, GND, SDA, SCL

Applications

• Smart lighting systems that adjust brightness based on ambient light
• Environmental monitoring for greenhouses, weather stations, and labs
• Data logging and research projects requiring accurate light level records
• IoT devices and home automation where light data influences behavior
• Energy-saving systems and adaptive displays

Integration and Compatibility

The GY-302 BH1750 module connects over I2C and is compatible with common libraries and platforms. Typical wiring is VCC to 3.3V/5V, GND to ground, SDA to I2C SDA, and SCL to I2C SCL. Popular libraries and examples are available for:

• Arduino (Wire library and BH1750 libraries)
• Raspberry Pi (Python smbus / smbus2 libraries)
• ESP8266 / ESP32 and other microcontroller platforms that support I2C

Benefits for Your Projects

• Quick integration reduces development time so you can focus on features
• Accurate lux readings enable reliable automation and analytics
• Low power and compact size make it ideal for remote and portable deployments
• Broad compatibility with development boards and IoT stacks

Ordering and Support

Available from Colgroad in Pakistan, the GY-302 BH1750 module is perfect for hobbyists, students, engineers, and commercial projects. Documentation, sample code, and community libraries make it easy to get started.

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