Seeed Grove Digital Light Sensor TSL2561 I2C Module

The Seeed Grove Digital Light Sensor is a high-resolution light-to-digital converter module, based on the TSL2561 IC, designed to accurately measure light intensity across a wide range of conditions. It converts light intensity into a digital signal via the I2C interface, making it easy to integrate with popular microcontroller platforms such as Arduino and Raspberry Pi.

This sensor features three detection modes — infrared, full-spectrum, and human-visible — allowing you to tailor your light measurements to your application needs. With a 16-bit digital output at 400kHz I2C fast-mode, it delivers high resolution and fast communication. Its dynamic range spans from 0.1 to 40,000 lux, ensuring reliable performance in both low-light and bright environments. Additionally, the module operates over a wide temperature range from -40°C to 85°C, making it suitable for demanding industrial or outdoor projects.

The sensor also includes a programmable interrupt function with user-defined upper and lower threshold settings, enabling event-driven monitoring without constant polling. This feature is ideal for applications requiring automated alerts or power-saving operations.

Key Features

• High-resolution 16-bit digital output at 400kHz I2C fast-mode
• Wide dynamic range from 0.1 to 40,000 lux
• Three detection modes: infrared, full-spectrum, and human-visible
• Programmable interrupt with user-defined thresholds
• Wide operating temperature range from -40°C to 85°C
• Compatible with Arduino and Raspberry Pi boards

Applications

Perfect for ambient light sensing, brightness control, security lighting, and environmental monitoring projects. Whether you are building a smart home system or an industrial light meter, the Grove Digital Light Sensor provides accurate and reliable light measurement.