Version: 3.1.0
Release date: 2018-08-08

www.pololu.com

This is a library for an Arduino-compatible controller that interfaces with the Pololu QTR reflectance sensors.

For documentation, please see the user's guide for the library on Pololu's website.

• 3.1.0 (2018-08-08): Added support for dimmable QTR and QTRX sensors with separate control of odd/even emitter banks.
• 3.0.0 (2016-08-16): Updated library to work with the Arduino Library Manager.
• 2.1.2 (2015-12-03): Corrected readLine() behavior to work with multiple instances (thanks to Tandy Carmichael).
• 2.1.1 (2014-05-02): Minor improvements to read() behavior and whitespace cleanup.
• 2.1.0 (2013-04-18): Improved existing examples and added two new examples for printing raw values.
• 2.0.2 (2013-04-17): Made constructors initialize pointers to avoid possible problems.
• 2.0.1 (2012-09-13): Added a 200 us delay after emitter state changes to ensure sensors do not start being sampled before the LEDs turn on/off.
• 2.0.0 (2012-02-14): Initial release of library on GitHub (with Arduino 1.0 compatibility).