QTR-1A Reflectance Sensor

QTR-1A Reflectance Sensor
Pololu item #: 958 0 in stock

This product has been discontinued.

We are now only selling this product in packs of two

The QTR-1A reflectance sensor carries a single infrared LED and phototransistor pair in an inexpensive, tiny 0.5" x 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.

 Description Specs (0) Pictures (7) Resources (6) FAQs (1) On the blog (1) 
QTR-1A reflectance sensor schematic diagram.

QTR-1A reflectance sensor schematic diagram.

QTR-1A reflectance sensor on a quarter for size reference.

QTR-1A reflectance sensor on a quarter for size reference.

QTR-L-1RC reflectance sensor on a quarter next to a QTR-1A reflectance sensor.

QTR-L-1RC reflectance sensor on a quarter next to a QTR-1A reflectance sensor.

An example of soldering header pins parallel to QTR-1A PCB for compact installation.

An example of soldering header pins parallel to QTR-1A PCB for compact installation.

QTR-1A output 1/8" away from a spinning white disk with a black line on it.

QTR-1A output 1/8" away from a spinning white disk with a black line on it.

QTR-1A output 3/8" away from a spinning white disk with a black line on it.

QTR-1A output 3/8" away from a spinning white disk with a black line on it.

QTR sensor size comparison. Clockwise from top left: QTR-3RC, QTR-1RC, QTR-L-1RC, QTR-8RC.

QTR sensor size comparison. Clockwise from top left: QTR-3RC, QTR-1RC, QTR-L-1RC, QTR-8RC.


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