User Manual

QTR-L-1A reflectance sensor schematic
diagram.
QTR-1A reflectance sensor schematic
diagram.
QTR-1RC and QTR-L-1RC
reflectance sensor schematic
diagram.
Please see the product pages [https://www.pololu.com/category/123/pololu-qtr-reflectance-sensors] for more
information on how these sensors work.
This document will explain how to install Arduino libraries for the Pololu QTR reflectance sensors,
and it will provide sample sketches as well as links to library documentation. The libraries will give
you everything you need to interface with a QTR-8x reflectance sensor array or multiple QTR-1x
reflectance sensors, including advanced features like automatic calibration and, in the case of line
detection, calculation of the line’s position.
Arduino Library for the Pololu QTR Reflectance Sensors © 2001–2018 Pololu Corporation
1. Introduction Page 3 of 15