ALLNET 4duino Ambient Light Sensor (Lux) - BH1750FVI

The ALLNET 4duino Ambient Light Sensor (Lux) is a high-precision digital light sensor module based on the BH1750FVI IC. Designed for Arduino, Raspberry Pi, ESP32/ESP8266, and other microcontrollers, it measures ambient light intensity from 1 to 65535 Lux with a spectral response close to the human eye. The sensor communicates via I2C interface and operates at 3.3V to 5V DC, making it ideal for smart home, IoT, and automatic brightness control projects.

Advantages

High accuracy and wide dynamic range ensure reliable light measurements in various environments. Low power consumption (0.12mA in power-down mode) extends battery life in portable applications. The built-in 16-bit AD converter provides digital output, eliminating the need for analog calibration. Configurable I2C address (0x23 or 0x5C) allows multiple sensors on the same bus.

Suitable for

• Ambient light detection and monitoring
• Automatic brightness control for displays and lighting
• Smart home and building automation
• IoT projects with Arduino, Raspberry Pi, ESP32/ESP8266
• Educational electronics and prototyping

Key specifications

• Sensor IC: BH1750FVI
• Measurement Range: 1 - 65535 Lux
• Interface: I2C
• Operating Voltage: 3.3V - 5V DC
• Resolution: 1 Lux (High Resolution Mode)
• Output Data Format: 16-bit digital value
• I2C Slave Address: 0x23 or 0x5C (configurable)
• Pinout: VCC, GND, SCL, SDA
• Current Consumption: ~0.12mA (Power Down), ~3mA (Active)
• Operating Temperature: -40°C to +85°C
• Module Dimensions (PCB): 32 x 15 mm (approx.)

Recommendations

For best results, use with a microcontroller that supports I2C communication. Ensure proper pull-up resistors on SCL and SDA lines if not provided on the module. The sensor can be used in both indoor and outdoor applications, but avoid direct exposure to water or extreme conditions.