QTR-1RC Reflectance Sensor (2-Pack)

QTR-1RC Reflectance Sensor (2-Pack)
Pololu item #: 2459 521 in stock

Price break Unit price (US$)
1 4.25
5 3.75
25 3.35
100 2.99


backorders allowed

The QTR-1RC reflectance sensor carries a single infrared LED and phototransistor pair in an inexpensive, tiny 0.5" x 0.3" module that can be mounted almost anywhere and is great for edge detection and line following. The output is designed to be measured by a digital I/O line. This sensor is sold in packs of two units.

 Description Specifications (2) Pictures (8) Resources (6) FAQs (1) 

Documentation and other information

Pololu QTR Reflectance Sensor Application Note (Printable PDF: QTR_application_note.pdf)

Information about using the Pololu QTR-xA and QTR-xRC reflectance sensors, including sample oscilloscope screen captures of sensor outputs.

Pololu AVR C/C++ Library User’s Guide (Printable PDF: pololu_avr_library.pdf)

Information about installing and using the C/C++ libraries provided for use with Pololu products.

Arduino Library for the Pololu QTR Reflectance Sensors (Printable PDF: QTR_arduino_library.pdf)

This guide explains how to use the QTRSensors library to read Pololu QTR sensors and QTR sensor arrays with the Arduino.

Pololu AVR Library Command Reference (Printable PDF: avr_library_commands.pdf)

A reference to commands provided in the Pololu C/C++ and Arduino libraries for the AVR.

Building Line Following and Line Maze Courses (Printable PDF: building_line_courses.pdf)

Step-by-step instructions for building your own line-following courses.


File downloads

Datasheet for Fairchild’s QRE1113GR reflective object sensor (202k pdf)
This is the sensor that we initially used in the Pololu QTR reflectance sensors, but we have since switched to a similar generic unit that has slightly longer range.