Pressure sensors (also known as strain gauges) are devices that convert mechanical energy into electrical energy. The process occurs by detecting the pressure force that is exerted on the surface. This force is then converted into an electrical signal (current or voltage). The value of the electrical signal is relatively proportional to the pressure force.
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Pressure sensors
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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.
Index: SPF-01640
Index: SPF-01640
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...
Index: SPF-04283
Index: SPF-04283
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.
Index: PLL-00753
Index: PLL-00753
Force sensor FSR-400 - 2kg round 5mm - Pololu 1695
The force sensor reduces its resistance when the force put to the round tip, accumulates. The sensor is round with a diameter of 5 mm.
Index: PLL-00752
Index: PLL-00752
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...
Index: SPF-11152
Index: SPF-11152
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...
Index: MOD-09446
Index: MOD-09446
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
Force sensor round 15mm - short connector - Pololu 2728
Pressure sensor reduces its resistance when the force put to the round tip, increases. The s ensor with the short connector, round, with about 15mm diameter.
Index: PLL-02348
Index: PLL-02348
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...
Index: SES-03099
Index: SES-03099
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
HX711 - amplifier for tensometers
Operational amplifier is designed to handle strain beams. The system is supplied with the voltage from 2.6 V to 5.5 V, communicates via a two-wire bus: the data line and a...
Index: DNG-12479
Index: DNG-12479
Tensometric beam NA1 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...
Index: SES-03098
Index: SES-03098
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
Tensometric beam NA1 20kg (200N) - 0,5m
Strain gauge beam operating within the range up to 20 kg, (approx. 200 N). Used e.g. for kitchen scales, portable scales. The connection cable is terminated with terminals with...
Index: SES-03522
Index: SES-03522
Tensometric beam NA27 3kg (30N)
Strain gauge beam operating within the range up to 3 kg , (approx. 30 N). The smallest version is used e.g. for kitchen scales, portable scales. The connection cable has...
Index: SES-03543
Index: SES-03543
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...
Index: SES-09074
Index: SES-09074
Bridge for FSR 4-channel pressure sensors
The module working with Arduino, it has 4 analog outputs. Board has been adapted to operate with pressure sensors FSR.
Index: MRV-13089
Index: MRV-13089
Rubber conductive rubber cable for measuring the tensile force - Adafruit 519
Conductive rubber wire with a diameter of 2 mm and a length of 1 meter. It is used to measure the stretching strength. During the stretching of the element, its resistance...
Index: ADA-06549
Index: ADA-06549
Grove - force sensor FSR402 with module - 2kg
Module from the Grove series, is equipped with a sensor of pressure force FSR402. The sensor communicates with the analog voltage signal. It is able to detect a pressure in...
Index: SEE-12595
Index: SEE-12595
OpenScale - strain-gauge bridge ATmega328P - SparkFun SEN-13261
Module for measuring the weight and temperature. It is used to read data from the strain-gauge sensors. It allows for calibration, setting the sampling frequency and accuracy....
Index: SPF-07276
Index: SPF-07276
DFRobot Gravity - digital pressure sensor 1kg (10N)
Pressure sensor for Arduino works in the range of up to 1 kg. It is based on HX711, it has 24-bit analog-to-digital converter designed to scale weight and control applications...
Index: DFR-11280
Index: DFR-11280
Force sensor RA18P-DIY - 4kg round 18mm
Pressure sensor reduces its resistance when the force put to the round tip, increases. The sensor is round with a diameter of 15 mm, overall width of 18 mm and the maximum...
Index: MRV-12157
Index: MRV-12157
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
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
In this category you will find various types of pressure sensors. As in the case of other categories with specialized products, many types of sensors can be distinguished. It is fact, nonetheless, that pressure sensors are widely used by many entities, including universities, schools, science laboratories, big companies and of course programmable electronics enthusiasts. These devices allow for the creation of various advanced Internet of Things projects.
Pressure sensors are used in the construction of various electronic scales and wherever the mass is a critical value, affecting the proper functioning of the device or object. Our store also offers strain gauge beams, enabling the measurement of the pressure force of objects with a permissible total weight in the range from 1 kg to 40 kg
Different types of pressure sensors
Pressure sensors measure the stress that is acting on them. The stress-sensitive elements used in them are made of metal wire or foil. Typical strain gauges in electronic scales (e.g. home bathroom scales) are characterized by a very simple design. The steel measuring element is susceptible to bending but completely resistant to deformation. In the case of more advanced products, such as those you see in this category, the principle of operation is slightly different. Much depends on the specific type of pressure sensor. There are linear and non-linear pressure sensors. Some devices have the option of an adjustable length of pressure, others do not. In addition, in this category you will also find professional elements of programmable electronics such as OpenScale – bridge for strain gauge beams or hub for strain gauge beams – Load Sensor Combinator! Here you will find everything you and your DIY project need.
Resistance pressure sensor – how does it work?
The resistance pressure sensor (FSR) consists of two layers electrically insulated against each other. When a pressure force is applied to the outer layer in the form of a foil membrane, the insulating sheath presses against the active layer. This last layer is lined with electrically conductive measuring points. The principle of operation of the pressure sensor is relatively simple. The greater the contact force, the lower the contact resistance between the measuring points. What is more, the conductive layer is connected to the power source with auxiliary voltage and the voltage signal represents the applied pressure force. It is worth noting that this type of device can be read by Arduino or Raspberry Pi via an analog-to-digital converter. For this purpose, the algorithms of the program are also used, converted into the value of the weight exerted on the surface of the load cell. Depending on the device and the programming method, the pressure measurement result can be conveniently displayed on the LCD display.
Some important notes on the pressure sensors’ installation processes
The flat FSR sensors are made of a very fine material. Therefore, special care is required during their installation. Before installation, carefully read the attached instructions. At the prototyping stage, the easiest way is to connect such a sensor to the contact plate directly or by means of crocodile clips or ARK connectors with screw terminals. If, however, you want to solder the pressure sensor to the PCB board, remember to carefully check that the soldering tip is 100% clean and that you have properly prepared the surface for soldering. This is very important because even within a few seconds the sensor layers may undercut, which in turn may cause permanent damage to the sensor. If you are a beginner in programmable electronics, check the other product categories in our store - we have a lot of educational courses and beginners kits for you!