QTR-L-1A Reflectance Sensor (2-Pack)

QTR-L-1A Reflectance Sensor (2-Pack)
Pololu item #: 2454 58 in stock

Price break Unit price (US$)
1 4.95
5 4.25
25 3.75
100 3.49


backorders allowed

The QTR-L-1A reflectance sensor incorporates a right-angle infrared LED and a right-angle phototransistor in an inexpensive, tiny 0.35″ × 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.

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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 with an Arduino or A-Star 32U4 controller.

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.


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