A set with a measuring module and a probe for measuring electrical conductivity. It allows you to measure the salinity of water and soil. It has a Gravity analog output interface. DFRobot SEN0451

Class-D stereo digital audio amplifier module PAM8403. The system allows you to connect two speakers with an impedance of 4 to 8 Ω and a power of 3 W. DFRobot DFR0119-O

This add-on board enables a Raspberry Pi B+, Pi A+, Pi 2 or Pi 3 to drive a pair of brushed DC motors. Its dual MC33926 motor drivers operate from 5 V to 28 V and can deliver a continuous 3 A (5 A peak) per motor. The default pin mappings make it easy to get started using our provided software, but the board also exposes most of the driver chips’ I/O pins for more specialized applications. 

Mini HDMI adapter with FFC connector. Designed for prototyping devices with a mini HDMI interface. Waveshare Mini HDMI Adapter Vertical

Micro SD card module

This discrete MOSFET H-bridge motor driver enables bidirectional control of one high-power DC brushed motor. The small 1.3″ × 0.8″ board supports a wide 6.5 V to 30 V voltage range and is efficient enough to deliver a continuous 25 A without a heat sink.

5.79-inch black and white e-Paper module with a resolution of 792x272 px. With a wide viewing angle, this display works well in a variety of lighting conditions, providing readability comparable to traditional paper. Waveshare 5.79inch e-Paper Module

Earth humidity sensor with analogue output, supplied with 3.3 to 5.5 V voltage with Gravity connector. DFRobot SEN0193

The PicoBuck LED Driver is an economical and easy to use driver that will allow you to control and blend three different LEDs on three different channels. By default, each channel is driven at 330mA; that current can be reduced by either presenting an analog voltage or a PWM signal to the board. COM-13705

Industrial switch USR-ISG008P with 8 PoE+ ports in a metal IP40 enclosure ensures reliable data transmission and power supply for end devices in industrial applications. The compact enclosure, wide operating temperature range, and redundant power supply make it a suitable solution for automation systems, monitoring, and IoT infrastructure.

GPS-13740

The very small step-down 6 V, 2.5 A synchronous inverter can be supplied with voltage up to 36 V, dimensions: 17.8 mm x 17.8 mm. Pololu 2859

The temperature and humidity sensor with RS485 Modbus interface is a precise measuring device, ideal for industrial automation systems, easily integrated thanks to the Modbus RTU protocol. Mounted on a DIN rail, it measures temperature from -40°C to 80°C and humidity up to 100% RH, providing reliable data in harsh environmental conditions.

Vgate iCar Pro BT4.0 is an advanced OBD2 diagnostic interface with Bluetooth 4.0 technology, compatible with iOS and Android devices. It allows you to read and clear OBD-II errors, monitor engine operating parameters in real time and clear the CHECK ENGINE light.

The EC11 is a precision rotary encoder with a pushbutton, generating 20 pulses per revolution, ideal for controlling user interfaces such as volume control or menu selection. With its compact design and easy mounting, it is suitable for a variety of DIY projects and automation applications.

Module with a stepper motor driver based on the DRV8434A system. It allows the bipolar motor to be supplied with current up to 1.2 A per phase and with a voltage from 4.5 V to 45 V. Communication via the SPI interface. Pololu 3769

The 2.1x5.5mm DC Power Jack male plug is a reliable 90-degree power connector, perfect for use in monitoring systems and LED lighting. ADP0037

USB-to-UART conversion solution integrated with a 12 MHz generator eliminating the need for an external resonator and enabling COM port emulation in Windows systems. Support for hardware full duplex, speeds from 50 bps to 2 Mbps, and modem signals enables expansion of serial devices and creation of USB-to-RS232 adapters. Flexible 3.3 V or 5 V power supply suitable for embedded systems, industrial automation, IoT devices, and robotic projects where fast and stable connection between USB and UART interface is required

The Arducam 2.2MP Mira220 RGB-IR Global Shutter USB3.0 Evaluation Kit enables rapid testing of cameras without coding, offering high image quality and fast capture thanks to the Mira220 sensor with global shutter and BSI technology, ideal for 2D/3D machine vision applications, with interface USB 3.0 for easy integration with various systems. ArduCam EK035

Arduino compatible shield for the ESP8266 WiFi SoC – a leading platform for Internet of Things (IoT) or WiFi-related projects. WRL-13287