Description
GY-302 BH1750 Light Intensity Module is a popular sensor for measuring ambient light, commonly used in electronics and embedded projects due to its accuracy and digital output. It uses the BH1750FVI chip, which communicates over the I2C interface and provides digital lux (lx) readings—making it ideal for display and lighting applications that need real-time, precise adjustments based on environmental light.
Key Features
Digital Output: Provides direct lux (lx) readings, eliminating the need for analog-to-digital conversion.
High Precision: Capable of detecting light variations down to 1 lux, making it suitable for both low and high light conditions.
No Color Distinction: Measures overall light intensity rather than distinguishing between light colors or types.
Wide Range: Can sense from very dim to very bright light with high resolution (typically up to 65535 lux).
I2C Interface: Easily connects to microcontrollers, such as Arduino or Raspberry Pi, using just two data lines.
Typical Applications
Mobile Devices: Adjusts screen and keypad backlight automatically based on surrounding light conditions.
Smart Lighting: Enables automatic brightness control in smart lamps and displays.
Environment Monitoring: Useful in weather stations or plant-growing systems to monitor ambient light.
Package Contents
The module typically includes:
1 x GY-302 BH1750 Light Intensity Module: Pre-soldered and ready for breadboard or direct wiring to development boards.
Additional Notes
The sensor requires a 3.3V–5V power supply and supports both standard (100kHz) and fast (400kHz) I2C modes.
It is compatible with a wide range of platforms and has extensive open-source library support for Arduino, ESP8266, and Raspberry Pi.
The GY-302 is valued for its simplicity, reliability, and digital accuracy in ambient light detection tasks.
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