BH1750 Light Sensor
- GY-302 BH1750 digital ambient light sensor for measuring illumination directly in lux (lx).
- Provides a fast and convenient digital I2C interface without requiring an external analog-to-digital converter.
- Ideal for automatic lighting, display brightness control, smart-home systems, weather stations, Arduino, ESP32 and IoT projects.
SKU: bh1750-light-sensor
GY-302 BH1750 Digital Light Sensor
The GY-302 is a compact digital ambient-light sensor module based on the BH1750. It measures the intensity of visible light and provides the result as a digital lux (lx) value, making it convenient for applications where quantitative light-level measurement is required.
Unlike a conventional LDR, which produces a changing resistance that must be converted into a voltage and interpreted by a microcontroller, the BH1750 performs the light measurement internally and communicates the result through an I2C interface. This provides a simple connection to Arduino, ESP32, Raspberry Pi and other compatible platforms.
The GY-302 can be used for automatic lighting systems, screen and display brightness adjustment, smart-home automation, environmental monitoring, data logging and other projects where ambient illumination needs to be measured.
| Product Type | Digital Ambient Light Sensor Module |
|---|---|
| Module | GY-302 |
| Sensor IC | BH1750 |
| Measurement | Ambient light intensity |
| Measurement Unit | Lux (lx) |
| Measurement Range | Approximately 1–65,535 lux |
| Interface | I2C |
| I2C Address | 0x23 or 0x5C, depending on address configuration |
| Output | Digital light-level reading |
| Resolution | Configurable; approximately 1 lux in high-resolution mode |
| Supply Voltage | Typically 3.3V–5V at module level, depending on breakout design |
| Spectral Response | Designed to approximate the human eye's visual response |
| Applications | Automatic lighting, brightness control, smart homes, environmental monitoring, data logging and IoT |
| Compatible Platforms | Arduino, ESP32, Raspberry Pi and other I2C-compatible microcontrollers |
| Module Type | Digital ambient light sensor breakout/module |
