DC 5.5x2.1mm power cord with a switch, 30 cm long. Black colour

The SN74LVC1T45DRLR from Texas Instruments is a single-channel, bidirectional voltage level translator, covering a range from 1.65 V to 5.5 V, ideal for signal conversion in microprocessor systems and mobile devices. With automatic detection of the transmission direction and a compact SMD SOT-5X3 package, the device is easy to implement and works well in limited mounting spaces.

Power switch that allows for controlled system on and off with simple button presses, with the ability to force shutdown after 10 seconds. It features a durable control circuit, LEDs, a self-resetting fuse, and offers low quiescent current, making it ideal for energy-efficient projects. SparkFun PRT-27081

ARM Cortex-M0 CPU, 16kB Flash, 4kB RAM, 1xUART, 1xI2C, 1xSPI, ADC, TSSOP20, STM, RoHS

ARM Cortex-M0 CPU, Low power, 32kB Flash, 6kB SRAM, USB, 2xUSART, I2C, SPI, ADC, STM, LQFP32, RoHS

Battery-Backed I2C™ Real-Time Clock/Calendar with SRAM, EEPROM and Protected EEPROM, SOIC8, Microchip, RoHS

Module with DC motor driver DRV8874. It can work with motors supplied with the voltage from 4.5 to 37 V and current consumption up to 2.1 A. Pololu 4035

UART - Ethernet converter enabling two-way communication between devices equipped with UART TTL ports and the Ethernet network. It is visible in the system as a virtual COM port and configured via the website or using AT commands. USR-TCP232-S2

Spring-loaded test needle for connecting and testing modules without soldering

Spring-loaded test needle for connecting and testing modules without soldering

Crowtail-Rotary Angle Sensor 2.0 is an analog rotary-angle sensor with a 300° range, ideal for value adjustment in electronic projects. It is used in lighting control, volume regulation and user interfaces.

Pressure sensor module with I2C interface (BMP085)

Converter with a built-in microcontroller (MCU) and a CAN transceiver system. It can work with devices with an operating voltage of 3.3 V via goldpin connectors with a pitch of 2.54 mm. The converter facilitates the design and prototyping of devices based on the CAN bus. Waveshare WS-TTL-CAN

A compact pressure and temperature module ideal for weather stations, drones, and IoT projects. It offers a measurement range of 300–1100 hPa with ±3 Pa accuracy and temperature measurement with ±1°C precision. With a built-in 3.3V regulator and logic level converter, it works with both 3V and 5V microcontrollers. STEMMA QT/Qwiic connectors make it easy to quickly connect and daisy-chain multiple sensors in a single system. Adafruit 6420

Compact 5V and 12V LED strip controller, supporting popular addressable models such as WS2812, WS2813 and WS2815. Compatibility with Seeed Studio XIAO boards and support for WLED and ESPHome applications allows easy integration with smart lighting and smart home systems. Thanks to the Grove interface and built-in security, the module is ideal for DIY projects, home automation and interactive lighting installations. Seeed Studio 105100021

Sunon EEC0384B1-000U-A99 is a 48 V DC axial fan with dimensions of 120×120×38 mm, featuring a ball bearing and high airflow of 234 m³/h. Thanks to its wide operating voltage range, low power consumption, and compliance with flammability standards, it is suitable for industrial, electronic, and automotive applications requiring reliable cooling.