Non-contact water turbidity sensor. It is capable of detecting the light transmittance and scattering coefficient of liquids in transparent cylindrical containers from 40 to 50 mm in diameter. It communicates via a UART interface. DFRobot SEN0554

The Finder 94.84.2SPA socket is a base designed for DIN rail or panel mounting, equipped with "box clamp" screw terminals. It is compatible with relay series 55.34 and allows for easy and secure connection in industrial applications.

Gravity: Digital Crash sensor is a microswitch module (left) often called a limit switch. The module is powered by 5V voltage and has a digital two-state output. DFRobot SEN0138-L

Red laser diode module with 5mW power, displaying the line. Ideally suited to the determination of straight lines, and thanks to the built-in driver, it is possible to supply voltage of 3 ... 5V. LD-G650A03 - Line

The compact (0.4″ × 0.5″) D24V5F1 synchronous buck voltage regulator takes input voltages between 3 V and 36 V and efficiently reduces them to 1.8 V while allowing for a maximum output current of 500 mA. This regulator offers typical efficiencies between 75% and 90%. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.

A LoRa wireless communication module dedicated to long-distance data transfer. It operates in the 868 MHz frequency band and is equipped with a USB interface. Waveshare USB-TO-LoRa-HF

The SUNON blower fan with dimensions of 75x75x30 mm, with an operating voltage of 6...13.8V, offers efficiency and reliability in cooling electronic devices, ensuring concentrated air flow and safety of use thanks to meeting flammability standards. Sunon PF75301B2-A99-B

The 7.3", 7-colour ACeP e-Paper display has a resolution of 800x480 px. It has the ability to display images from a microSD card. Framed with a nice wooden border, it can be used as an electronic photo frame. Waveshare PhotoPainter

A compact Hall-effect current sensor that provides accurate DC and AC current measurement within a ±10 A range with galvanic isolation. It features a high-sensitivity analog VOUT output with a 150 kHz bandwidth, enabling fast and precise readings in dynamic systems. The module operates over a wide temperature range of -40°C to 125°C, and the low current path resistance minimizes energy loss. Its small size and flexible mounting options make it ideal for prototyping, industrial systems, and space-constrained projects. Pololu 5444

A compact Hall-effect current sensor that provides accurate DC and AC current measurement within a ±10 A range with galvanic isolation. It features an analog VOUT output with a sensitivity of 132 mV/A and a 150 kHz bandwidth, enabling fast and precise readings in dynamic systems. The module operates over a wide temperature range of -40°C to 125°C, and the low current path resistance (~1.6 mΩ) minimizes energy loss. Its small size and flexible mounting options make it ideal for prototyping, industrial systems, and space-constrained projects. Pololu 5440

Soil moisture sensor dedicated to micro:bit. It is supplied with the voltage from 3.3 V to 5 V and communicates via an analog signal. SparkFun SEN-15272

An 8" IPS LCD display with touch panel. It is equipped with an HDMI/USB type C interface for video display and USB type C for touchscreen. It offers a resolution of 1280x800 pixels and has an aluminium casing. Waveshare 8HP-CAPLCD Monitor

Set of 4250 SMD 0805 resistors with 170 values and 1% tolerance is a practical solution for electronics engineers, service technicians, and PCB designers. It allows quick selection of the appropriate resistors without the need to search for individual values.

A set of 2300 SMD 0805 capacitors with 92 values in a booklet-style organizer provides a wide range of capacitances and rated voltages. It is suitable for prototyping, servicing and production of electronic circuits, enabling quick component selection and organized workflow.

5" AMOLED display with touch screen. Equipped with HDMI interface for image display and USB for touch screen. Resolution 960x544 pixels. Waveshare 5inch HDMI AMOLED

AW-CB375NF wireless communication module. It supports 802.11 a/b/g/n/ac Generation 5 Wi-Fi and Bluetooth 5.0 and features an M.2 A/E Key connector. Waveshare Wireless-AW-CB375NF

This advanced Nema 23 stepper motor controller from the CLRS series is designed for precision industrial applications with RS485 (Modbus RTU) network communication. It eliminates the risk of lost steps with closed-loop feedback and offers support for Profile Position, Velocity, Homing, and PR Mode with a 16-position point-to-point control table. The controller supports up to 31 axes on a single network, offers up to 7 A current, a 20 to 50 VDC supply voltage, and passive or active cooling, making it a reliable solution for robotics, automation, and CNC systems. CL2C-RS57

The 4.3-inch QLED display has a resolution of 800 x 480 pixels. It has a slim and lightweight design and communicates via the DSI interface. Waveshare 43H-800480-QLED

Module with e-Paper display with a diagonal of 2.9" and a resolution of 296x128 px. Communication via the SPI interface. Waveshare Pico-ePaper-2.9