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Thin round force sensor 0.6 inch diameter with flexible leads and adhesive backing

Pololu

Pololu FSR 0.6" Diameter Circle Transducer

SKU CH-8T9E-S8ST0

A force-sensing resistor with a 0.58" active area that varies resistance from a few grams to 20 N, featuring masked adhesive backing and 0.1" solder tabs for breadboard use

  • TypeSensors
  • Variable resistance with applied force enables touch sensing
  • Force accuracy between 5% and 25% for human-touch control
  • 58" diameter sensing area in 0.72" round package
  • Masked adhesive backing allows simple surface mounting
  • 1" solder tabs fit breadboards and perfboards

Force-sensing resistor for touch interfaces

This Pololu FSR is a passive variable resistor that decreases resistance as applied force increases. It enables simple touch or pressure detection in electronics projects and robotics. The 0.58" diameter sensing area responds to forces from a few dozen grams up to a few kilograms. It is designed for human-touch control rather than precision measurement.

Accuracy limits and mounting constraints

Force accuracy ranges from 5% to 25%, making the device unsuitable for precise force quantification. The sensor uses a polymer thick film construction that is flexible and extremely thin at 0.02". A masked adhesive backing allows straightforward mounting on flat surfaces. The 0.1" solder tab spacing fits standard solderless breadboards and perfboards.

Lightweight design with defined sensing range

Weighing only 0.25 g, the 0.72" diameter round sensor adds negligible mass to a build. It comfortably handles the 0.2 N to 20 N force range typical of human interaction. The 1.7" flexible leads provide wiring flexibility within compact assemblies. It runs out of resolution well before reaching industrial load-cell precision requirements.

Highlights

  • Variable resistance with applied force enables touch sensing
  • Force accuracy between 5% and 25% for human-touch control
  • 58" diameter sensing area in 0.72" round package
  • Masked adhesive backing allows simple surface mounting
  • 1" solder tabs fit breadboards and perfboards

Specifications

TypeSensors

Questions about this item

How do I choose between the different versions or capacities of this Pololu FSR?

This listing is for the single 0.6 inch diameter circle transducer with a .58 inch sensing area; no other versions or capacities are offered.

What does the 5% to 25% force accuracy mean when the FSR is installed in a real project?

The sensor acts as a variable resistor whose resistance drops as force increases, giving a rough indication of touch pressure from a few dozen grams up to 20 N, but it is not suitable for precision force measurements.

What interface or standard does this FSR use and what does it cap in practice?

It connects via 1.7 inch flexible leads on a .1 inch solder tab spacing, compatible with most solderless breadboards and perfboards for simple resistive readout.

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