QTR-1A Reflectance Sensor (2-Pack)

QTR-1A Reflectance Sensor (2-Pack)
Pololu item #: 2458 284 in stock

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


backorders allowed

The QTR-1A 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 reflectance measurement is output as an analog voltage. This sensor is sold in packs of two units.

 Description Specs (2) Pictures (8) Resources (6) FAQs (1) On the blog (0) 

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.

Related Products

QTR-L-1A Reflectance Sensor (2-Pack)
QTR-L-1RC Reflectance Sensor (2-Pack)
QTR-8A Reflectance Sensor Array
QTR-8RC Reflectance Sensor Array
QTR-3A Reflectance Sensor Array
QTR-1RC Reflectance Sensor (2-Pack)
QTR-3RC Reflectance Sensor Array
Sharp GP2Y0A51SK0F Analog Distance Sensor 2-15cm
Pololu 38 kHz IR Proximity Sensor, Fixed Gain, Low Brightness
0.100" (2.54 mm) Breakaway Male Header: 1×40-Pin, Right Angle
Pololu Carrier with Sharp GP2Y0D815Z0F Digital Distance Sensor 15cm
Pololu 38 kHz IR Proximity Sensor, Fixed Gain, High Brightness
Pololu 3pi Robot

Related Categories

Pololu QTR Reflectance Sensors
Sensors
Optical Range Finders
Sonar Range Finders
Premium Jumper Wires
Wires with Pre-crimped Terminals
Log In
Pololu Robotics & Electronics
Shopping cart
(702) 262-6648
Same-day shipping, worldwide
Menu
Shop Blog Forum Support
My account Comments or questions? About Pololu Contact Ordering information Distributors