Reflectance sensor QTR-1A - module

Index: PLL-00035

Module with QTR bounce sensor with analogue output.Supplyvoltageis 5 V.

Reflectance sensor QTR-1A - module
€1.54 tax excl.
Discontinued product
30-day returns
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Manufacturer: Pololu


The product has been replaced by theQTR-1A bouncesensor- module 2.


  • Power supply voltage: 5,0 V
  • Power consumption: 20 mA
  • Output: Analogue voltage
  • Output signal range: 0 to 5 V supply voltage
  • Optimum operating distance of the sensor: 3 mm
  • Maximum operating distance of the sensor: 6 mm
  • Weight: 0.25 g
Czujnik odbiciowy
Details in thedocumentation.


  • Connection of sensor output to an analog-to-digital converter (e.g. built in microcontroller or analog input in Arduino).
  • Connection via comparator directly to I/O pins.
  • Using the internal comparator built in some microcontrollers.
The manufacturer has preparedlibraries forAVR familymicrocontrollersand forArduinousers, making it easier to operatethe sensor.


Schemat czujnika odbiciowego

DiagramconnectionsQTR-1A sensor on the board. The 150 Ω resistor limits the current flowing through the infrared emitting diode. The 47 kΩ resistor is used to pull up the collector output to the VIN supply voltage.

Same-day shipping

  • Crediting the payment for the order on our account on a business day before 10:00 AM means sending the goods on the same day.
  • All packages are being delivered by GLS Group courier and covered with insurance up to 1200 EUR.
  • You will receive a link to track your package and monitor the progress of delivery as soon as it is shipped.

Terms of delivery 

GLS - zone 1

Austria, Belgium, Croatia, The Czech Republic, Denmark, Germany, Netherlands, Poland, Slovakia 

  • Delivery time: 2-4 days
  • Delivery cost: from 4.18 EUR
  • Insurance: 1200 EUR
GLS - zone 2

Bulgaria, Estonia, France, Hungary, Italy, Latvia, Lithuania, Luxembourg, Portugal, Romania, San Marino, Slovenia

  • Delivery time: 2-5 days
  • Delivery cost: from 5.35 EUR
  • Insurance: 1200 EUR
GLS - zone 3

Finland, Greece, Ireland, Spain, Sweden 

  • Delivery time: 2-7 days
  • Delivery cost: from 7.67 EUR
  • Insurance: 1200 EUR

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