QTR-8A Reflectance Sensor Array

QTR-8A Reflectance Sensor Array
Pololu item #: 960 392 in stock

Price break Unit price (US$)
1 9.95
5 8.95
25 7.95
100 6.95


backorders allowed

This sensor module has 8 IR LED/phototransistor pairs mounted on a 0.375" pitch, making it a great detector for a line-following robot. Pairs of LEDs are arranged in series to halve current consumption, and a MOSFET allows the LEDs to be turned off for additional sensing or power-savings options. Each sensor provides a separate analog voltage output.

 Description Specs (0) Pictures (13) Resources (10) FAQs (0) On the blog (3) 

Documentation and other information

QTR-8A and QTR-8RC Reflectance Sensor Array User’s Guide (Printable PDF: QTR-8x.pdf)

User’s guide for the QTR-8A reflectance sensor array.

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.

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.

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 with an Arduino or A-Star 32U4 controller.

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.
QTR-8x Reflectance Sensor Array drill guide (35k dxf)
This DXF drawing shows the locations of all of the board’s holes.

Related Products

QTR-8RC Reflectance Sensor Array
QTR-3A Reflectance Sensor Array
QTR-3RC Reflectance Sensor Array
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QTR-L-1A Reflectance Sensor (2-Pack)
QTR-L-1RC Reflectance Sensor (2-Pack)
0.100" (2.54 mm) Breakaway Male Header: 1×40-Pin, Right Angle
QTR-1RC Reflectance Sensor (2-Pack)
Pololu 3pi Robot

Related Categories

Pololu QTR Reflectance Sensors
Sensors
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