PC817 module with two optocouplers

Real-time clock module based on the RV3028 chip. It is powered with the voltage from 2 to 5 V and communicates via the I2C interface. There is also a socket with a battery on the board. Pimoroni PIM449

Pololu High-Power Motor Driver 24v20

The Step Down converter module converts the voltage in the range of 6-40V to 1.2-35V with an efficiency of 96% and can work with an intensity of up to 20A. Its compact dimensions and operating temperature range from -10°C to 75°C make it ideal for many electronic applications.

The stepper motor driver supports a voltage of 9 to 40 VDC and a current of 0.5-3.5A, allowing the selection of microsteps from 1 to 32. The device is resistant to environmental conditions such as humidity and shock

Industrial module with 16 relays. It communicates via the RS485 interface and supports the Modbus RTU protocol. Waveshare Modbus RTU Relay 16CH

USB - UART TTL converter based on the FT232RL chip, the module is equipped with a miniUSB socket. Works with 3.3V or 5V voltage levels.

Step-down DC-DC converter module that converts a 12 V or 11.1 V output voltage (e.g. from a lithium battery) to a voltage in the range of 1.8 V to 5.1 V. It has a power output of up to 60 W, and with an output current of up to 18 A, the module can be used to power a 5 m WS2812 RGB LED strip. DFRobot DFR1025

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.

The MQ-2 sensor allows the measurement of gas concentrations such as propane, butane, methane, LPG as well as alcohol and smoke. Sensor measuring range: up to 10,000 ppm

Expansion module with Micro SD card slot. It provides an easy and convenient way to connect the card to FPGA boards and microcontrollers. Numato Lab EXPSDC001

Micro HDMI adapter with FFC connector. Designed for prototyping devices with HDMI interface. Waveshare Micro HDMI Adapter Vertical

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 36V and efficiently reduces it to 5V. The board measures only 0.7″ × 0.7″ yet delivers a typical continuous output current of up to 2.5A and features reverse voltage protection. Pololu 2858

Shield for STM32 Nucleo that allows you to add the possibility of operating a three-phase brushless motor (BLDC) or synchronous permanent magnet (PMSM). It uses the L6230 chip for control. X-NUCLEO-IHM07M1

A set of two cameras with a Sony IMX219 sensor, allows you to rotate the camera and control the tilt angle. Works with Jetson Nano and Xavier NX. The camera is equipped with an 8MP matrix. ArduCAM B0191PT

RS485 - Ethernet converter that provides easy communication between the RS485 and RJ45 Ethernet interface. Configurable via website or AT commands. Waveshare RS485 TO ETH (for EU)

Set of 6 lenses with M12 mount included with adapter and accessories. Designed to work with the Raspberry Pi HQ camera. ArduCAM LK003