Pololu trim with QTR-8A reflective sensors - analog

Strap odbiciowych eight sensors with analog outputs. Voltage supply 5 V or 3.3 V.

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Cena: 37,90 zł


  • Number of sensors: 8
  • Dimensions: 75 x 127 x 4 mm
  • Supply voltage: 5 V or 3.3 V
  • Consumption current: under 100 mA
  • Output signal: analog
  • Output voltage range: 0 V to supply voltage
  • The optimum distance for measurement: 3 mm
  • The maximum distance for measurement: 6 mm
  • Weight: about 3 g (without connectors)


The strap can be used in robots such as linefollower (positioning line). Has a built-in MOSFET transistor, providing disable sensors to save energy, or change the intensity of illumination of the infrared LEDs.


There are several method use of output signals, e.g.:

  • built-in microcontroller comparator or ADC to measure voltages
  • using the analog comparator and the reading of the measurements in digital form


The bar can be machined using the module of Arduinoby connecting the outputs of the sensors at the analog inputs.


If necessary, the module can be divided into two independently operating strap, as well as the picture below:

The division requires przylutowania only one supplied resistor.


Diagram of the module:




Posting the payment for the order on our account on a business day up to 13:00 means sending the goods on the same day!


The time of payment depends on the hours of ELIXIR session of the sender's bank and the recipient of the transfer (more information on this subject, for example on the website


The table presents available forms of delivery in Poland


Carrier and

Bank wire

by cash


Poczta Polska

terms of service

9,90 PLN17,90 PLN1-3 days

Kurier GLS

terms of service

14,90 PLN22,90 PLN

1-2 days

Paczkomaty 24/7 

terms of service

12,90 PLN-1-3 days

If the amount to pay for products exceeds 500 PLN
Delivery is for free!


  • Free delivery of orders over 500 PLN does not apply to parcels addressed outside of Poland.
  • Free delivery does not apply when changing orders.
  • The delivery period is counted in working days from the date of dispatch of the order.