Force-Sensing Resistor - 0.2" Circle
This force-sensing resistor (FSR) from Interlink Electronics is a passive component that exhibits a decrease in resistance when there is an increase in the force applied to the small, circular active area (0.2"/5mm diameter), allowing you to create a sensor that is able to detect force or pressure. The polymer thick film (PFT) device is optimized for use in human touch control of electronic devices and can sense an applied force ranging from a few dozen grams to over 2kg
![]() |
This force-sensing resistor (FSR) from Interlink Electronics is a passive component that acts as a variable resistor, with resistance decreasing in response to increasing applied force, which makes it easy to add a touch interface to your project or create a robot with much more sophisticated tactile senses than are possible with simple lever switches. The polymer thick film (PFT) device is optimized for use in human touch control of electronic devices and can sense an applied force anywhere in the active area ranging from a few dozen grams to over 2kg.
In our tests, the resistance exceeded 1 MΩ with no applied pressure and ranged from around 100 kΩ to a few hundred Ohms as finger pressure varied from light (a few dozen grams) to heavy (pressing as hard as possible). The resistance is very stable when the pressure is fixed, and the readings are very repeatable (there are no problems with hysteresis). This resistance range is well suited to work directly with the internal pull-ups of many microcontrollers such as AVRs and PICs. The FSR was responsive enough and sensitive enough to distinctly pick up light, rapid finger tap, and it was even able to pick up the vibrations of a small vibration motor placed on it on the motor’s side.
The 0.3"-diameter circular pad is flexible, light (0.15 g), and extremely thin (0.015"), and it has a circular active sensing area with a diameter of 0.2". It does not appreciably compress when pressure is applied. The FSR has a masked adhesive backing for easy mounting, and the 1.2" flexible male leads give you a convenient way to integrate the part into your project. The two leads have a 0.1" spacing, which means they are compatible with most solderless breadboards and perfboards, though the solder tabs are too short to work well with many 0.1" connectors.
Note that this FSR is not a load cell or strain gauge, and it is not suitable for precision measurements. While it can be used for dynamic measurement, only qualitative results are generally attainable. Force accuracy ranges from 5% to 25% depending on a number of factors, and the resolution is better than 0.5% of the full range. Please see the datasheet (1MB pdf) for more information, including force-vs-resistance curves, integration notes, usage tips, and suggested electrical circuits.
![]() |
| A variety of force-sensing resistors (FSR). |
|---|
We have four versions of force-sensing resistors available, which lets you choose the one with the dimensions that best suit your application:
![]() |
Force-Sensing Resistor - 0.5" Circle |
![]() |
Pololu Carrier with Sharp GP2Y0D810Z0F Digital Distance Sensor 10cm |
![]() |
Force-Sensing Resistor - 1.5" Square |
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Round, flexible, pressure sensor that can be used to implement very sensitive force detection. The sensor is durable and designed to detect static and dynamic pressure at high response speeds. DFRobot SEN0297
No product available!
Flexible pressure sensor with dimensions of 40 x 40 mm. Designed to detect static and dynamic pressure at high reaction speed. DFRobot SEN0296
A simple flex sensor 2.2" in length. As the sensor is flexed, the resistance across the sensor increases. SEN-10264
No product available!
M5Stack U180 module with the HX711 chip enables reading data from weight sensors via I2C, providing precise force and mass measurements in projects based on the M5Stack platform. Ideal for compact weighing and dosing systems.
Force-Sensing Resistor - 1.5" Square
No product available!
The SparkFun Load Sensor Combinator is a bare PCB that combines four load sensors into a standard four-wire Wheatstone bridge configuration. BOB-13878
Educational module for measuring force in the range from 30 g to 1.5 kg, based on a flexible material that responds with a change in the analog signal. Thanks to its small thickness (0.4 mm), fast response and compatibility with Arduino, micro:bit and Unihiker, it is ideal for teaching physics, engineering and DIY projects. DFRobot SEN0616
No product available!
Aluminum extensometer beam, allowing measurement of weight up to 20 kilograms. It has four wires. It is used in kitchen scales and portable scales, it has a 21 cm cable, RoHS.
No product available!
Flexible pressure sensor with dimensions of 400x15 mm. Designed to detect static and dynamic pressure at high reaction speed. DFRobot SEN0299
M5Stack U177 – Unit Mini Scales is a ready-to-use weighing module based on the HX711 and STM32, featuring I2C communication and support for popular platforms. It is used in laboratory, production and educational projects that require precise mass measurement.
Long, flexible, pressure sensor that can be used to implement very sensitive force detection. The sensor is durable and designed to detect static and dynamic pressure at high response speeds. DFRobot SEN0293
Module with a deflection sensor with two measuring probes. The board houses the ADS1015 converter, which is an ADC converter with an output in the form of an I2C interface. SparkFun SEN-14666
No product available!
Aluminum tensometer beam, allowing weight measurement up to 2 kilograms. It has four wires. It is used in kitchen scales and portable scales.
This disc load cell (sometimes called a strain gauge) can translate up to a whopping 200kg of pressure (force) into an electrical signal. Each load cell is able to measure the electrical resistance that changes in response to, and proportional of, the strain (e.g. pressure or force) applied to the disc. SEN-13332
SEN-11207 - Flexiforce Pressure Sensor - 25lbs (1" area)
Flexiforce Pressure Sensor A201 – 1lb, Tekscan, RoHS
Force-Sensing Resistor - 0.2" Circle