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Description: This is a piezoresistive force sensor from Tekscan. The harder you press, the lower the sensor's resistance. Pressing lightly, the resistance changes from infinite to ~300k. The sensor itself is thin and flexible, but the resistance does not change while being flexed. Resistance changes only when pressure is applied to the round area at the end of the sensor. Used as a presence sensor (someone standing), weight sensor, pressure sensor (impact testing), etc.

The overall length is about 8.5". Sensor comes with 0.1" spaced, reinforced, breadboard friendly connector.

This sensor comes in three flavors. This sensor ranges from 0 to 1lb of pressure.

Documents:

Comments 8 comments

  • Would this be sensitive enough to sense an envelope?

  • I want to measure the force being applied to a cable (imagine an old fashioned tug-o-war). Is there a mechanical way for one of these to do that? Is there a different product that would do the job better?

  • For information on how to calibrate your sensor go here => http://www.tekscan.com/how-do-i-calibrate-my-flexiforce-sensor.

  • I just received a few of these and had problems getting any data out of them at a force in the lower 5% of the range of the sensor. I connected it to the advertised OpAmp circuit and cranked up the gain, but nothing. No change in resistance at low forces. I called Tekscan (the manufacturer) and Dan, an engineer, explained that they do not work at a force less than 0.05lb. I’m not sure about any of their higher force models, but watch out for low ranges!

    ~Rich

  • Are these water proof (below the connector of course)? Could I use one to measure the depth of water in a tank?

    • The sensors are only water-resistant, not waterproof. If you wanted to use these under water, you would need to completely seal the sensor (cover it entirely) with a sealant (one without acetic acid) or protect it with a poly bag.

  • this is cross-listed with the OpAmp Breakout. How do these connect together?

    • Late reply, but hopefully helpful to others;
      The sensor wants to be run through an op amp, look through the datasheet for example circuits.


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