BH1750 Light Sensor Module – Digital Ambient Light / Lux Sensor with I2C Interface for Arduino, ESP32 & IoT Projects
Rs. 142.00
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BH1750 Light Sensor Module – Digital Ambient Light / Lux Sensor with I2C Interface for Arduino, ESP32 & IoT Projects
Rs. 142.00
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The BH1750 Light Sensor Module is a compact digital ambient light sensor designed to measure the intensity of surrounding light in lux (lx). Based on the BH1750FVI digital light sensor, this module provides a convenient I2C interface, making it easy to integrate with popular development boards such as Arduino, ESP32, ESP8266, Raspberry Pi, and STM32.
Unlike simple LDR-based light sensors that provide an analog voltage requiring calibration, the BH1750 provides a digital light measurement, making it useful for applications where reliable ambient-light monitoring is required.
Its compact size, low power consumption, and straightforward I2C communication make it suitable for IoT devices, smart lighting systems, display brightness control, automation projects, robotics, and environmental monitoring applications.
Key Features
- Digital ambient light intensity measurement
- Measures light level directly in Lux (lx)
- I2C digital communication interface
- Easy integration with Arduino, ESP32, ESP8266, Raspberry Pi and STM32
- Compact and easy-to-integrate module
- Low power consumption
- No external LDR or analog signal conditioning required
- Suitable for indoor and embedded light-monitoring applications
- Useful for automatic brightness and smart-lighting systems
- Ideal for DIY, educational and professional electronics projects
Technical Specifications
| Specification | Details |
|---|---|
| Sensor IC | BH1750 / BH1750FVI |
| Sensor Type | Digital Ambient Light Sensor |
| Measurement Unit | Lux (lx) |
| Communication | I2C |
| Supply Voltage | Typically 3.3V–5V module input* |
| Digital Output | I2C |
| Typical I2C Address | 0x23 / 0x5C |
| Measurement Modes | Low Resolution, High Resolution & High Resolution Mode 2 |
| Application | Ambient Light Measurement |
| Module Type | Breakout / Sensor Module |
* Note: Module supply specifications can vary between board versions. Check the markings/specifications of the particular module before connecting it to your controller.
Applications
The BH1750 Light Sensor Module can be used in a wide range of electronics and IoT applications, including:
- 🌞 Ambient light monitoring
- 💡 Automatic LED brightness control
- 🏠 Smart home automation
- 📱 Automatic display brightness adjustment
- 🌐 IoT environmental monitoring
- 🤖 Robotics projects
- 🌱 Smart agriculture and greenhouse monitoring
- 🖥️ Display and lighting control systems
- 🔆 Smart street-lighting prototypes
- 📊 Data logging and environmental sensing
- 🎓 Arduino and electronics education projects
How It Works
The BH1750 detects the intensity of visible light using its integrated photosensitive element and converts the detected light level into a digital value. The connected microcontroller communicates with the sensor through the I2C bus and can read the measured illumination level in lux.
This digital approach makes the BH1750 convenient for applications where a numerical light-intensity value is required rather than simply detecting whether an area is bright or dark.
Compatible Development Boards
The module can be integrated with:
- Arduino UNO / Mega / Nano
- ESP32 / ESP32-S3 / ESP32-C3
- ESP8266 / NodeMCU
- Raspberry Pi
- STM32 development boards
- Other microcontrollers supporting I2C communication
Package Includes
- 1 × BH1750 Light Sensor Module