Digital Light Intensity Sensor

BH1750 Digital Ambient Light Sensor Module Measurement Range: 1–65,535 Lux Product Description BH1750 Digital Light Sensor Module is a compact ambient light sensor designed for accurate measurement of illumination intensity in Lux (lx). It uses the BH1750 digital light sensor IC and communicates with microcontrollers through the I²C interface, making it easy to integrate into Arduino, ESP32, ESP8266, STM32, and other embedded systems. Unlike a conventional LDR, the GY-302 provides a digital Lux reading, eliminating the need for an external analog-to-digital conversion circuit and simplifying software development. The module includes convenient VCC, GND, SCL, SDA, and ADDR pins and is suitable for automatic brightness control, smart lighting, IoT devices, robotics, display systems, and environmental monitoring applications. Key Features Module: GY-309 Sensor IC: BH1750 Measurement: Ambient light intensity Measurement unit: Lux (lx) • Digital I²C communication • 5-pin interface • Adjustable I²C address through ADDR • Compact PCB design • Easy to connect and program • Compatible with popular development platforms Technical Specifications Parameter: Specification Module: GY-302 Sensor: BH1750 Sensor Type: Digital Ambient Light Sensor Measurement Unit: Lux (lx) Interface: I²C Pins: VCC, GND, SCL, SDA, ADDR Communication: I²C Digital Supply: Typically 3.3–5V* Output: Digital Lux Reading Applications: IoT, Arduino, ESP32, Robotics, Smart Lighting Pinout Pin: Function VCC: Power Supply GND: Ground SCL: I²C Clock SDA: I²C Data ADDR: I²C Address Selection Applications • Smart lighting systems • Automatic screen brightness control • IoT environmental monitoring • Arduino projects • ESP32 / ESP8266 projects • Robotics • Smart home systems • Industrial automation • Light intensity monitoring • Display and backlight control • Energy-saving lighting systems Package Contents • 1 × GY-302 BH1750 Digital Light Sensor Module • 1 × 5-Pin Header