Enhance Your Project with Adafruit Reflective Photo Interrupt Sensor – TCRT1000
Elevate your electronic projects with the Adafruit Reflective Photo Interrupt Sensor – TCRT1000. This cutting-edge sensor is designed to detect reflective surfaces with high accuracy, making it a perfect choice for a variety of applications, from robotics to automation systems.

The sensor operates by utilizing an IR LED that emits light. When this light is reflected back to the IR photo-transistor, the transistor activates, increasing the current flow. This allows the sensor to efficiently detect the presence of objects in front of it. Powered by 3 to 5V DC, the sensor’s output can be easily read via the signal pin, providing quick and reliable detection.
Key Features:

High Sensitivity: The TCRT1000 sensor is designed to detect reflective surfaces with precision, ensuring reliable operation in various environments.
Adjustable IR Emitter: A built-in potentiometer allows you to adjust the brightness of the IR emitter, ranging from 1mA to 100mA, providing flexibility for different applications.
Visual Indicators: The sensor is equipped with green and red LEDs to indicate power status and phototransistor activation, respectively. Both LEDs can be disabled if needed.
Easy Integration: The sensor board includes a plug-and-play JST PH (2mm pitch) input connector, ensuring quick and solderless integration with other components such as CircuitPlayground or micro
Robust Design: The TCRT1000 right-angle sensor module, combined with a 10K pullup biased phototransistor, ensures stable performance and accurate detection.
Power Efficient: Designed to operate with a power supply of 3 to 5V DC, this sensor is both efficient and easy to incorporate into your projects.

Resources
Primary Guide: Adafruit STEMMA Reflective Photo Interrupt Sensor