Force sensor FSR-406 - 2kg square 38mm - Pololu 1645*

Force sensor changes its resistance when the force applied to the square tip, increases. The sensor in the form of a rectangle with side of 38 mm.

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Price 59,90 zł

Product description: Force sensor FSR-406 - 2kg square 38mm

The sensor reduces its resistance when the force applied to the round of the tip, increases. Due to this phenomenon, and the use of microcontroller with  analog to digital converter, you can build a sensor that measures the force. The measurement can be displayed, for example, on the LCD display.


Czujnik siły nacisku FSR-406

In the absence of the force affecting on sensor, the resistance is about 1M Ω. Position of 20-gram subject led to lower resistance up to 50 . During an intense sensor's button pressing, device showed 200 Ω.

Układ pomiarowy i wykres zależności napięć i rezystancji od przyłożonej siły


Measurement system and graphs of the voltage's and resistance's dependency from the applied force.


The product is compatible with Arduino

Online, you can find a tutorial along with an example of code for Arduino on the bildr website.


We also have other sensors:

Specification of FSR-406 force sensor

  • External dimensions: 43,7 x 43,7 x 0.5 mm
  • Model: FSR-406
  • Range: from 0.2 N to 20 N
  • Weight: 1.2 g


More details in the documentation.



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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.