QTR-1A Reflectance Sensor (2-Pack)

QTR-1A Reflectance Sensor (2-Pack)
Pololu item #: 2458 944 in stock

Price break Unit price (US$)
1 4.25
5 3.75
25 3.35
100 2.99


backorders allowed

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. This sensor is sold in packs of two units.

 Description Specs (2) Pictures (8) Resources (6) FAQs (1) On the blog (0) 
QTR-1A reflectance sensors with included optional header pins.

QTR-1A reflectance sensors with included optional header pins.

QTR-1A and QTR-1RC reflectance sensors plugged into a breadboard in two possible orientations.

QTR-1A and QTR-1RC reflectance sensors plugged into a breadboard in two possible orientations.

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

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

QTR-1A reflectance sensor schematic diagram.

QTR-1A reflectance sensor schematic diagram.

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-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.

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.