Older QTR Sensors

This category contains our selection of QTR reflectance sensors without integrated LED drivers (so the emitter brightness depends on the supply voltage). These modules were all introduced prior to August 2018.

Products in category “Older QTR Sensors”

Pololu item #: 961
Brand: Pololu
Status: Active and Preferred 
Free add-on shipping in USA 
Temporarily out of stock. See product page to backorder.
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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 digital I/O-measurable output.

Pololu item #: 960
Brand: Pololu
Status: Active and Preferred 
Free add-on shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

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.

Pololu item #: 2457
Brand: Pololu
Status: Active and Preferred 
Free add-on shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
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This compact module packs three IR LED/phototransistor pairs onto a 1.25″ × 0.3″ board. The sensors are mounted on a 0.375″ pitch, allowing this array to be used as a minimal detector for a line-following robot. Each sensor provides a separate digital I/O-measurable voltage output.

Pololu item #: 2456
Brand: Pololu
Status: Active and Preferred 
Free add-on shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

This compact module packs three IR LED/phototransistor pairs onto a 1.25″ × 0.3″ board. The sensors are mounted on a 0.375″ pitch, making this array a great minimal sensing solution for a line-following robot. Each sensor provides a separate analog voltage output.

Pololu item #: 2459
Brand: Pololu
Status: Active and Preferred 
Free add-on shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
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The QTR-1RC 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 output is designed to be measured by a digital I/O line. This sensor is sold in packs of two units.

Pololu item #: 2458
Brand: Pololu
Status: Active and Preferred 
Free add-on shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
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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.

Pololu item #: 2455
Brand: Pololu
Status: Active and Preferred 
Free add-on shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
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The QTR-L-1RC reflectance sensor incorporates a right-angle infrared LED and a right-angle phototransistor in an inexpensive, tiny 0.35″ × 0.3″ module that can be mounted almost anywhere and is great for edge detection and line following. The output is designed to be measured by a digital I/O line. This sensor is sold in packs of two units.

Pololu item #: 2454
Brand: Pololu
Status: Active and Preferred 
Free add-on shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

The QTR-L-1A reflectance sensor incorporates a right-angle infrared LED and a right-angle phototransistor in an inexpensive, tiny 0.35″ × 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.

Pololu item #: 1419
Brand: Pololu
Status: Active 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

This reflectance sensor module is designed for use with the Zumo shield for Arduino. It has six IR LED/phototransistor pairs that can be used for line following or edge detection; each sensor provides an independent, digital I/O-measurable output. The array draws approximately 40 mA when the emitters are on, and an optional input allows the emitters to be turned off for additional sensing or power-saving options.

Related Categories

Pololu QTR Reflectance Sensors
High-Density (HD) QTR Arrays
Medium-Density (MD) QTR Arrays
Proximity Sensors and Range Finders
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