Description
Product Overview
The NOYITO TSL2561 Sensor Module is a high‑precision photoelectric sensor designed for developers, hobbyists, and engineers who need accurate light measurement across a broad spectrum. Measuring from 0.1 lux up to more than 40,000 lux, the sensor integrates two photodiodes—one broadband and one infrared—to capture both visible and infrared light, delivering a flat response that mimics human eye perception. Powered by a modest 3 V supply and drawing minimal current, the breakout board measures just 0.71 × 0.51 × 0.12 inches and weighs only 0.211 oz, making it ideal for space‑constrained applications. Communication is handled via a standard I2C interface, allowing seamless connection to popular microcontroller platforms such as Arduino, ESP32, and Raspberry Pi. The module includes two identical units per package, providing redundancy for testing or dual‑sensor projects. Built with robust solder pads and a protective epoxy coating, the breakout ensures long‑term reliability even in demanding environments.
![[Product front view showing all components]](https://www.deliciousco.store/wp-content/uploads/2026/07/bffb9fb0d16748dd9816507ba02a333d.jpg)
Usage
Designed for versatility, the TSL2561 can be employed in a wide array of projects. In smart home systems, it monitors ambient lighting to adjust LED brightness automatically, enhancing energy efficiency and user comfort. For agricultural applications, the sensor tracks sunlight exposure on greenhouse crops, enabling precise control of shading and supplemental lighting. Robotics enthusiasts use the module to enable line‑following robots to react to varying light conditions, while wearable device developers integrate it to measure environmental illumination for adaptive display brightness. Because the sensor operates at 3 V, it pairs effortlessly with battery‑powered devices, and its I2C protocol simplifies wiring—only two data lines are required for multiple sensors on the same bus. The compact form factor also makes it suitable for wearable prototypes, portable data loggers, and educational kits that teach students about optics and digital signal processing.
Why Choose Us
Choosing the NOYITO TSL2561 means selecting a product backed by rigorous quality assurance and responsive customer support. Each sensor undergoes calibrated testing to verify its lux range, linearity, and temperature stability, ensuring that the data you receive is trustworthy. The breakout board is fabricated with lead‑free, RoHS‑compliant materials, reflecting our commitment to environmental responsibility. In addition, NOYITO provides comprehensive documentation, including Arduino libraries, schematic diagrams, and example code that accelerate development time. Should you encounter any issues, our technical support team is available via email and community forums, offering troubleshooting assistance and firmware updates. The two‑unit pack also offers cost savings compared to purchasing single units, and the identical sensors allow you to implement redundancy or comparative studies without additional procurement delays.
Key Features
- Wide lux range from 0.1 to 40 000+ lux for versatile lighting environments
- Dual photodiode design captures both visible and infrared light for accurate color‑balanced readings
- Simple I2C interface requires only two wires, enabling easy integration with Arduino, Raspberry Pi, and ESP32
- Compact 3 V low‑power design fits into tight spaces and extends battery life in portable projects
- Includes two sensors per pack plus dedicated technical support for rapid prototyping and reliable deployment
FAQ
What is the recommended integration time for low‑light conditions?
For dim environments, set the integration time to the maximum 402 ms mode. This extends the sensor’s exposure period, allowing it to capture more photons and improve accuracy when lux levels are below 1.
Can the sensor be used with 5 V logic levels?
Yes. Although the module operates at 3 V, it is tolerant of 5 V I2C logic when a proper level‑shifting circuit or a pull‑up resistor network is employed.
How do I calibrate the sensor for my specific application?
Start by reading the raw channel values, then apply the provided calibration formulas from the datasheet to convert them to lux. For custom environments, you can create a lookup table based on measured reference light sources.
Is the sensor waterproof?
The breakout board itself is not sealed for water immersion. For outdoor or wet‑area deployments, mount the sensor in a protective enclosure with a clear acrylic window to maintain optical access while shielding the electronics.
What warranty does NOYITO offer?
All TSL2561 modules come with a one‑year limited warranty covering manufacturing defects. Support includes replacement of faulty units and access to firmware updates during the warranty period.







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