QTR-8A Reflectance Sensor Array

Documentation and other information

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

  User’s guide for the QTR-8A reflectance sensor array.
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  Pololu QTR Reflectance Sensor Application Note (Printable PDF)

  Information about using the Pololu QTR reflectance sensors, including differences between A-type and RC-type sensors and sample oscilloscope screen captures of sensor outputs.
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  Pololu AVR C/C++ Library User’s Guide (Printable PDF)

  Information about installing and using the C/C++ libraries provided for use with Pololu products.
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  Pololu AVR Library Command Reference (Printable PDF)

  A reference to commands provided in the Pololu C/C++ and Arduino libraries for the AVR.
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  Building Line Following and Line Maze Courses (Printable 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.

• Dimension diagram of the QTR-8x Reflectance Sensor Array (198k pdf)

• 3D model of the QTR-8A Reflectance Sensor Array (4MB step)

• Guide utilisateur du senseur QTR (suiveur de ligne) (1MB pdf)

  Un guide utiliser et exploiter un senseur QTR (détecteur de ligne) (version 0.1). Note: This French translation of our QTR sensor documentation was made by our distributor MCHobby.

Recommended links

• Arduino library for the Pololu QTR Reflectance Sensors

  This library for Arduino makes it easy to interface with Pololu QTR Reflectance Sensors.

• mbed library for QTR sensors

  Matthew Phillipps ported our Arduino Library for the Pololu QTR Reflectance Sensors to the mbed platform. The Arduino library is designed to work with Pololu QTR reflectance sensors, so the mbed library should too, but Matthew points out he only tested it with the analog sensors. This library was not written and is not maintained by Pololu.