Pololu QTR-3RC Reflectance Sensor Array

Description Pololu QTR-3RC Reflectance Sensor Array Features precise line detection Operates at 5.0 V with 50 mA current Measures 1.25" × 0.3" × 0.1" Offers optimal 0.125" sensing range Includes 3 IR LED/phototransistor pairs The Pololu QTR-3RC Reflectance Sensor Array is a compact module designed for line-following robots, featuring three IR LED/phototransistor pairs on a small board. Each sensor provides a digital I/O-measurable voltage output, allowing for precise detection of lines or proximity. The sensors are spaced at 0.375 inches, making them ideal for courses using black electrical tape. The module operates by charging the output node and measuring the decay time of the voltage, which indicates reflectance levels. This method enhances sensitivity and allows parallel reading with most microcontrollers. View more What's Included 1x Pololu QTR-3RC Reflectance Sensor Array 1x 1×5 Straight male header strip 1x 1×5 Right-angle male header strip