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Piezoelectric membrane with wires - 20mm - SparkFun SEN-10293

The piezoelectric elements are useful for detecting the vibration or knocking. You can use them in a simple way by reading the voltage at the output. It can also be used for...
5.0 (6)
Index: SPF-11152
Index: SPF-11152
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Regular price €2.00 Price €2.00

Strain Beam Module - with 24-bit ADC NAU7802 - STEMMA QT / Qwiic - Adafruit 4538

The Adafruit module is equipped with the NAU7802 chip, which enables reading data from strain gauge beams . Includes ultra high resolution 24 bit differential ADC with...
5.0 (1)
Index: ADA-21578
Index: ADA-21578
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Regular price €8.90 Price €8.90

Tensometric beam NA27 10kg (100N)

Strain-gauge beam operating in the range of up to 10 kg (100 N approx.). It is applied, for example, for kitchen scales, portable scales. The connecting cable has tips with the...
5.0 (4)
Index: SES-09074
Index: SES-09074
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Regular price €13.50 Price €13.50

Strain gauge sensor presure force of 50kg

The pressure sensor reduces its resistance when the force put to the square tip, increases.   The sensor in the form of a rectangle with the side of 34 mm. For the operation...
5.0 (4)
Index: MOD-09446
Index: MOD-09446
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Regular price €1.90 Price €1.90

The conductive membrane for measuring the pressure of the force - Adafruit 1361

The membrane is made of a conductive material. The pressure, at any point, changes the resistance, which leads to the measurable change of the voltage in a simple way. The...
5.0 (2)
Index: ADA-05014
Index: ADA-05014
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Regular price €6.50 Price €6.50

Deflection sensor 73x6,3mm - SparkFun SEN-10264

During the bending, sensor increases its resistance. It can be used to detect hand movements, for example, crimping fists. Sensor length is 55 mm.
5.0 (4)
Index: SPF-01640
Index: SPF-01640
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Regular price €15.50 Price €15.50

Tensometric beam NA27 5kg (50N)

Strain-gauge beam operating in the range of up to 5 kg (approx. 50 N). The smallest version is used, for example, in kitchen scales, portable scales. The connecting cable...
5.0 (1)
Index: SES-03099
Index: SES-03099
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Regular price €13.90 Price €13.90

Force sensor FSR-402 - 2kg round 18mm - Pololu 1696

The pressure sensor reduces its resistance as the force applied to the round tip increases. Round sensor with a diameter of 18 mm.
4.5 (2)
Index: PLL-00753
Index: PLL-00753
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Regular price €9.50 Price €9.50

Tensometric beam NA27 1kg (10N)

Strain-gauge beam operating in the range of up to 1 kg (approx. 10 N). The smallest version is used, for example, in kitchen scales, portable scales. The connecting cable has...
5.0 (1)
Index: SES-03097
Index: SES-03097
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Regular price €9.50 Price €9.50

HX711 - amplifier for a strainer beam - SparkFun SEN-13879

Operational amplifier is designed to handle strain beams. The system is supplied with the voltage from 2.7 V to 5.0 V, communicates via a two-wire bus: the data line and a...
5.0 (14)
Index: SPF-04283
Index: SPF-04283
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Tension beam YZC-1B (97) 40kg (400N)

Strain-gauge beam operating in the range of up to 40 kg (400 N approx.). It is applied, for example, for kitchen scales, portable scales. The connecting cable has tips with the...
5.0 (1)
Index: DNG-13170
Index: DNG-13170
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Regular price €19.00 Price €19.00

Force sensor round 5mm (0.25 '') - short connector - Pololu 2727

Pressure sensor reduces its resistance when the force put to the round tip, increases. The sensor with the short connector, round, with about 5 mm diameter.
Index: PLL-02349
Index: PLL-02349
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Regular price €9.50 Price €9.50

FlexiForce Pressure Sensor - 25lbs. (1" area) - SparkFun SEN-11207

Pressure sensor reduces its resistance when the force put to the round tip, increases. The round sensor with a diameter of 25.4 mm, the maximum pressure is 11 kg.
Index: SPF-10118
Index: SPF-10118
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Regular price €37.90 Price €37.90

Tensometric beam NA1 8kg (80N)

Strain-gauge beam operating in the range of up to 8 kg (80 N approx.). It is applied, for example, for kitchen scales, portable scales. The connecting cable has tips with the...
Index: DNG-12671
Index: DNG-12671
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Regular price €11.50 Price €11.50

Qwiic Scale - NAU7802 module for tensometric beam - SparkFun SEN-15242

The module is based on a NAU7802 system enabling the reading of data from a strain-gauge beams. By connecting the model to the microcontroller, you can read the change in...
Index: SPF-14405
Index: SPF-14405
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Regular price €21.50 Price €21.50

Stretch sensor - conductive rubber sheet - 200x200x1mm - Adafruit 5463

Tensile sensor in the form of a rubber sheet with dimensions of 200 x 200 x 1 mm. The principle of operation is very simple - the product increases its electrical resistance...
5.0 (1)
Index: ADA-21827
Index: ADA-21827
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Regular price €10.90 Price €10.90

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.
5.0 (1)
Index: PLL-01040
Index: PLL-01040
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Regular price €14.50 Price €14.50

Deflection sensor 112x6,3mm - SparkFun SEN-08606

During the bending, sensor increases its resistance. It can be used to detect the movement of your hand. Sensor length: 112 mm.
Index: SPF-02406
Index: SPF-02406
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Regular price €27.50 Price €27.50

Pressure sensor cell 50kg - 4pcs.

Pressure sensor reduces its resistance when the force put to the square tip, increases. The sensor is in the form of a rectangle with sides of 33 mm. The set has 4 pieces,...
5.0 (1)
Index: MOD-07267
Index: MOD-07267
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Regular price €11.90 Price €11.90

Load Sensor Combinator (Ver. 1.1) - SparkFun BOB-13878

The module allows you to connect 4 load sensors - strain-gauge beams to one of the bridge via 4-wire cable. It finds application, for example, in the construction of the...
Index: SPF-07277
Index: SPF-07277
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Regular price €2.90 Price €2.90

Stretch sensor - conductive rubber sheet - 200x200x0,5mm - Adafruit 5464

Tensile sensor in the form of a rubber sheet with dimensions of 200 x 200 x 0.5 mm. The principle of operation is very simple - the product increases its electrical resistance...
5.0 (2)
Index: ADA-21826
Index: ADA-21826
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Regular price €8.50 Price €8.50

Tensometric beam NA1 10kg (100N)

Strain gauge beam allowing to measure loads up to 10 kg . It is perfect for places where measurement accuracy is an absolute priority. The tightness level of the beam is IP66...
Index: MAR-24196
Index: MAR-24196
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Regular price €33.00 Price €33.00

Touch sensor - Iduino SE061

Metal touch sensor module. The sensor detects the touch of the human body through a metal element. It has a digital and analog interface. Built-in potentiometer allows...
Index: OST-14277
Index: OST-14277
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Regular price €1.50 Price €1.50

Mini Scales Unit - Pressure sensor up to 5kg - HX711 - expansion module Unit - M5Stack U177

Mini Scales Unit is an integrated miniature scale that combines a weighing sensor with a 5 kg range , an ADC acquisition system ( HX711 ) and a microprocessor for direct...
2.0 (1)
Index: MSS-24374
Index: MSS-24374
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Regular price €9.00 Price €9.00

Principle of operation of pressure sensors

The resistive pressure sensor (FSR) consists of two layers electrically insulated from each other. When a pressure force is applied to the outer layer in the form of a foil membrane, the insulating cover presses against the active layer, which is lined with electrically conductive measurement points. The greater the pressure force, the lower the contact resistance between the measurement points. The conductive layer is connected to a power source with auxiliary voltage, and the voltage signal, which reflects the applied pressure force, can be read, e.g. by Arduino, via an analog-to-digital converter and, based on the program algorithm, converted into the value of the weight exerted on the surface of the load cell. The measurement result can be displayed on the LCD display.

Important tips for installing strain gauges

Flat FSR sensors are made of very delicate material and great care is required when installing them. At the prototyping stage, it is easiest to connect such a sensor to the breadboard directly, or using crocodile clips or an ARK connector with screw terminals. However, if you want to solder the pressure sensor to the PCB, you must ensure that the soldering tip and the soldering surface are clean, because even within a few seconds the layers of the sensor may melt, causing permanent damage.

The compensating strain gauge is used to measure the pressure force taking into account the influence of external factors, primarily air humidity, temperature and atmospheric pressure.

The correct operation of the strain gauge sensor can be checked by supplying it with the appropriate voltage at nominal load and reading the output voltage value with an electric meter .

The resistance strain gauge uses the phenomenon of changing electrical resistance when changing the dimensions of the resistance material . Such devices are used, for example, to measure stress or pressure, for example in loading systems.