QTR-1A reflectance sensor - 2pcs. - Pololu 2458

Index: PLL-01842 EAN: 5904422304874

Two modules with QTR reflective sensors. They have an analog output. The supply voltage is 5 V.

QTR-1A reflectance sensor - 2pcs. - Pololu 2458
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Manufacturer: Pololu
Compatibility: Arduino


  • Supply voltage: 5.0 V
  • Current consumption: 20 mA
  • Output: analog voltage
  • The range of the output signal: from 0 to supply voltage of 5 V
  • The optimal distance of the sensor's operation: 3 mm
  • The maximum distance of the sensor's operation: 6 mm
  • Weight: 0.25 g


The set includes two QTR1-A sensor with goldpin straps: straight and corner.


Method of application

  • Connecting the sensor's output to the analog-to-digital converter (for example, integrated in the microcontroller or analog input in Arduino).
  • Connection usingthe comparatordirectly to the I/O pins.
  • Using the built-in in some microcontrollers, internal comparator.


The product is compatible with Arduino

The manufacturer has prepared a library formicrocontrollers from the AVR familyforArduino users which facilitates the usage of the sensor.


Diagram of the system


Schemat podłączenia czujnika QTR-1A

The schemeof connecting the QTR-1A sensor on the board. Resistor of 150 Ωlimits the current flowing through the LED that emits the infrared. The 47 resistor is used to pull-up the collector output to the VIN supply voltage.

Package width 6 cm
Package height 6 cm
Package depth 0.5 cm
Package weight 0.002 kg

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