GY-302 BH1750 Light Intensity Module

GY-302 BH1750 Light Intensity Module is a compact and highly accurate digital light intensity sensor module designed to measure ambient light levels in lux (lx). Built around the reliable BH1750FVI sensor IC by ROHM, this module offers exceptional sensitivity, stability, and ease of integration, making it an ideal choice for IoT projects, smart lighting systems, automation, and embedded applications.

Unlike traditional analog light sensors such as LDRs, the BH1750 provides direct digital lux output, eliminating the need for complex calibration and ADC processing. The GY-302 module communicates via the I²C interface, ensuring seamless compatibility with popular microcontrollers like Arduino, ESP8266, ESP32, Raspberry Pi, STM32, and AVR boards. Its small footprint and low power consumption make it suitable for both prototyping and production-level designs.

Key Features of GY-302 BH1750 Light Intensity Module

• Accurate Digital Light Measurement
  Measures ambient light intensity directly in lux with high precision and repeatability.

• Wide Measurement Range
  Capable of measuring light levels from 1 lux to 65,535 lux, suitable for both dim and bright environments.

• I²C Communication Interface
  Supports standard I²C protocol for fast and reliable data transfer with minimal wiring.

• Low Power Consumption
  Ideal for battery-powered and low-energy IoT applications.

• Built-in Optical Filter
  Ensures light measurement closely matches the human eye response.

• No External Calibration Required
  Digital output eliminates errors associated with analog sensors and voltage variations.

• Compact & Lightweight Design
  Easy to integrate into space-constrained projects and portable devices.

• Wide Microcontroller Compatibility
  Works seamlessly with Arduino, Raspberry Pi, ESP32, ESP8266, and other development boards.

Technical Specifications – GY-302 BH1750 Light Intensity Module

• Sensor IC: BH1750FVI

• Module Type: Digital Ambient Light Intensity Sensor

• Operating Voltage: 3.0 V – 5.0 V DC

• Interface: I²C

• I²C Address: 0x23 (default) / 0x5C (selectable)

• Measurement Range: 1 – 65,535 lux

• Resolution: 1 lux

• Measurement Modes:

  • High Resolution Mode

  • High Resolution Mode 2

  • Low Resolution Mode

• Response Time: Approx. 120 ms

• Current Consumption: ~0.12 mA (typical)

• Operating Temperature: –40°C to +85°C

• Dimensions: Compact PCB design (GY-302 standard form factor)

Note: Specifications may vary slightly depending on manufacturer and production batch.

Applications of GY-302 BH1750 Light Intensity Module

The GY-302 BH1750 Light Sensor Module is widely used across various industries and project types due to its precision, reliability, and ease of use. Typical applications include:

• Smart Lighting Systems
  Automatically adjust brightness based on ambient light conditions to save energy.

• IoT & Home Automation
  Used in smart homes for daylight detection, curtain control, and intelligent lighting automation.

• Display Brightness Control
  Regulates screen brightness in consumer electronics for enhanced user comfort.

• Weather Monitoring Systems
  Measures sunlight intensity for environmental data collection and analysis.

• Energy-Efficient Buildings
  Helps optimize lighting systems by responding to natural light availability.

• Robotics & Autonomous Systems
  Enables light-based navigation and environment awareness.

• Educational & DIY Projects
  Ideal for students, hobbyists, and engineers learning sensor integration and I²C communication.

Why Choose the GY-302 BH1750 Light Intensity Module?

The GY-302 BH1750 module stands out for its high accuracy, digital output, low power consumption, and simple integration. Compared to conventional LDR-based sensors, it delivers consistent and reliable lux measurements without external calibration. Its robust performance, compact design, and compatibility with popular microcontroller platforms make it a trusted solution for both prototyping and commercial applications.

Whether you are building a smart IoT system, an energy-efficient lighting controller, or an academic project, the GY-302 BH1750 Light Intensity Module provides precise, real-time ambient light measurement you can rely on.

Package Includes:

1 x GY-302 BH1750 Light Intensity Module

FAQ

1. Where can we buy this GY-302 BH1750 Light Intensity Module?

This product is available online athttps://aiiottech.in/product/gy-302-bh1750-light-intensity-module/ and also available at our store in Pudupakkam/Kelambakkam, Chennai-603103

2. When can I get this GY-302 BH1750 Light Intensity Module after placing the order?

RGRJ AIIoT TECHNOLOGIES will immediately ship and deliver the product within 1-3 working days.

Video Link: GY-302 Digital Light Intensity Module