DFRobot Gravity LTR390 UV Sensor 280–430nm I2C UART
The DFRobot Gravity LTR390 UV Sensor is a digital light sensor module providing simultaneous ambient light and UV intensity measurement with a spectral response from 280nm to 430nm. It features a built-in ADC and MCU for direct digital output via I2C or UART interfaces, making it compatible with Arduino, Raspberry Pi, ESP32, and other 3.3V/5V microcontroller platforms.
Features
- Dual-function sensor for UV intensity (280–430nm) and ambient light sensing.
- Digital output via I2C (address 0x1C) or UART serial interface.
- Wide operating voltage range compatible with 3.3V and 5V logic systems.
- High-resolution output with programmable 13 to 20-bit effective resolution.
- Integrated interrupt function with programmable upper and lower thresholds.
Out of stock
The LTR390-UV sensor module integrates a specialized photodiode with a spectral response optimized for ultraviolet light detection from 280nm to 430nm, closely matching the UV-A and UV-B bands relevant for environmental monitoring. Its built-in analog-to-digital converter (ADC) and microcontroller (MCU) perform on-board signal conditioning and digitization, providing stable digital readings directly via I2C or UART protocols, which minimizes noise susceptibility compared to analog sensors.
Engineered for reliability, the module features adjustable gain settings (1, 3, 6, 9, 18) to accommodate a wide dynamic range of light conditions, from low indoor lux levels to direct sunlight. The interrupt function allows the host microcontroller to enter low-power sleep modes, waking only when light levels cross user-defined thresholds, which is ideal for battery-powered monitoring applications. Its Gravity-series connector ensures plug-and-play compatibility with DFRobot’s ecosystem and standard breadboards.
Additional Information
| Weight | 0.015 kg |
|---|---|
| Dimensions | 6 × 5 × 3 cm |
