QTR-8A Reflectance Sensor Array

Pololu item #: 960 440 in stock
Brand: Pololu
Status: Active and Preferred 
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Price break Unit price (US$)
1 9.95
5 8.95
25 7.95
100 6.95


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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 (12) FAQs (0) On the blog (3) 
  • Paul's Wixel-based line following robot: Two Point Four

    Paul's Wixel-based line following robot: Two Point Four

    by Paul - 18 August 2015

    Two Point Four was my entry in the LVBots 2015 line following competition, originally built for our 2013 contest but significantly rebuilt since...

  • Apeiros robot Kickstarter

    Apeiros robot Kickstarter

    by Grant - 15 July 2014

    Abe Howell posted to our forum about a Kickstarter campaign for a robot he calls Apeiros. It is an open-source robot he designed as a teaching tool...

  • Robot Zero: a fast line follower for beginners

    Robot Zero: a fast line follower for beginners

    by Ben - 7 February 2011

    This excellent guide from C.I.r.E. (Club de Informática, robótica y Electrónica) shows in detail how to build a fast (> 2 m/s) line-following...

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