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.
Shield with 6 analog pins in the form of clamp connections, each of these pins has an individual, adjustable resistor. The board has been adapted to work with FSR pressure sensors that can be calibrated using the adjustable resistors with a screw.
The pressure sensor changes its resistance depending on the size and point of application of force on the measurement bar with the length of 36 mm. Sensor allows you to easily create a touch interface for the control of device.
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 tips with the removed insulation, and its length is 25 cm.
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 has tips with the removed insulation, and its length is 25 cm.
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 membrane has dimensions of 280 x 280 x 0.1 mm, it can be freely bent.
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, working in the range of up to 50 kg each. The sensors require a corresponding amplifier, to work.
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. It communicates via UART with the built-in miniUSB port. It works with voltage of 5 V.
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 bathroom scales. The board has space for a temperature sensor DS18 B20 and RJ45 connector.
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 of the sensors, required is an appropriate amplifier. The sensors work in pairs (half bridge) or in fours (full bridge).
The pressure sensor changes its resistance depending on the size and point of application of force on the measurement bar with the length of 100 mm. Sensor allows you to easily create a touch interface for the control of device. Sensor's length can be adjusted by cutting it in designated areas.
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 for direct connection with the strain-gauge beam. Supply voltage of the converter is from 2.6 V to 5.5 V.
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
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.
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.
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!