101020174 Arduino - Grove Infrared Reflection Sensor, RPR220

Description The reflectivity of infrared light varies with the color and distance of the reflecting surface. According to this principle, Grove - Infrared Reflective Sensor utilizes a RPR220 reflective photosensor module to detect color and distance. When a light-colored object approaches,the signal intensity received by infrared reflective sensor increases and the indicator LED on board turns red. When a dark-colored object approaches, the intensity decreases and the LED turns off.

This sensor is a basic and widely used part in applications such as line-following cars, rotary speed detection, auto data logging on utility meters or other situations where color or distance contrast is sharp.

Features - Operating voltage: 4.5 V - 5.5 V - Digital output, 0 or VCC - High resolution sensor;minimum detectable length: 1mm black line - Effective distance:4-15mm - Indicator LED on board - Sensitivity adjustable via potentiometer - Small Grove 1X1 compatible interface

For all Grove users (especially beginners), we provide you guidance PDF documents. Please download and read through Preface - Getting Started and Introduction to Grove before your using of the product.