Trim with QTR-8A reflective sensors - analog - Pololu 960*

Strap of the eight reflecting sensors with analog outputs. It is powered with the voltage of 5 V or 3.3 V.

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In stock, shipping 24 hours!

Price 41,90 zł


  • Number of sensors: 8
  • Dimensions: 75 x 127 x 4 mm
  • Supply voltage: 5 V or 3.3 V
  • Consumption of current: under 100 mA
  • Output signal: analog
  • Output voltage range: 0 V for supply voltage
  • The optimal 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 (detecting the position of the line). It has a built-in MOSFET transistor that allow to disable the sensors to save energy, or change the intensity of illumination of the infrared LEDs.


There are several methods to use the output signals, e.g.:

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


The strap can be used via the module of Arduino by connecting the outputs of the sensors to the analog inputs.


If necessary, the module can be divided into two independently operating straps, just likeon the picture below:

The division requires the soldering of the 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.