Description
This is the GY-302 Ambient Light Sensor Module, which uses the ROHM BH1750FVI chip. It's a sensor that measures light intensity in a digital format over an I2C bus. The core principle of the module is to convert light into a digital numeric value. It reads in a standard unit of illuminance called "lux", allowing you to quantify the brightness of an environment.
Key Features
- ROHM BH1750FVI Chip: This is the core component, an ambient light sensor IC from ROHM Semiconductor .
- High-Precision Light Detection: The chip is highly accurate, with a spectral response close to the human eye, making it good for measuring brightness as perceived by people .
- Digital Output: It communicates via the I2C protocol and has a built-in 16-bit analog-to-digital converter (ADC) . This means it directly outputs a clean, digital value without requiring complex calculations or calibration.
- Wide Measurement Range: It can measure from 0 to 65,535 lux , which covers environments from a dark room to bright sunlight.
Specifications
| Parameter | Specification |
|---|---|
| Model | GY-302 |
| Sensor Chip | BH1750FVI |
| Supply Voltage | 3V – 5V |
| Measurement Range | 0 – 65535 lux |
| ADC Resolution | 16-bit |
| Communication | I2C |
Applications
- Automatic Lighting Control: Use it for smart home projects to adjust light brightness based on sunlight or to trigger a garden light at dusk.
- Display Brightness Adjustment: It's used in smartphones and monitors to automatically dim or brighten the screen to save power and improve visibility .
- IoT and Environmental Monitoring: It can be a part of a weather station to measure sunlight intensity or for smart agriculture to monitor greenhouse lighting conditions.