A 20x15 mm knob with an internal diameter of 6 mm. For mounting on a potentiometer or rotary encoder

A 20x15 mm knob with an internal diameter of 6 mm. For mounting on a potentiometer or rotary encoder

A step-down converter module that allows you to reduce the input voltage from 12.2–36 V to a stable 12 V, ensuring high efficiency thanks to SMPS technology. A maximum output current of 600 mA allows you to power microcontrollers, IoT modules, and other electronic systems. The device is equipped with short circuit and overheating protection and offers very low quiescent current. Pololu 5597

Module with EEPROM memory, capacity 512 kbit (64kB). Communication takes place via the I2C interface. The module has 3 jumpers that enable selection of one of 8 addresses. SparkFun SPX-14764

The Akyga AK-ND-C16 USB-C adapter allows you to charge older laptops with a 5.5x3.0 mm connector using modern USB-C PD chargers. This is an ideal solution for those who have lost or damaged their power supply. This allows you to use one charger for multiple devices. Before use, it is worth checking the power of the power supply to ensure adequate power to the laptop. Akyga AK-ND-C16

HDMI (M) - HDMI (M) cable 1.5 m long for digital audio and video data transmission. Compatible with HDMI versions 1.4, 1.4a, 1.3 (High Speed Ethernet).

The Akyga AK-ND-C15 USB-C adapter allows you to adapt USB-C PD chargers to older laptops with a 4.0x1.3 mm connector. It supports Power Delivery technology, automatically selecting the supply voltage. Before use, it is worth checking the power of the power supply to ensure adequate power to the device. Akyga AK-ND-C15

A small module for learning how to solder. It allows you to build a small device with two LEDs that turn on when the light intensity changes

Compact ESP32 based board designed for lighting and WLED projects, offering WiFi, Bluetooth and efficient power supply via USB Type-C (up to 4A). It offers two LED outputs with logic level conversion, a built-in I2S microphone, STEMMA QT port, button, NeoPixel and additional GPIO pins. With support for multiple platforms (Arduino, MicroPython, CircuitPython, ESP-IDF), it is ideal for wearable devices and interactive projects. Adafruit 6160

Adafruit 1890

Pulse Electronics JK0-0136NL is a single-pass RJ45 connector module (ICM) for 100/1000 Base-T connections, designed for network cards, LAN-on-Motherboard solutions and computer applications. Compatible with the IEEE 802.3 standard, provides high performance and EMI suppression, available in TAB-UP configuration with green and yellow LEDs.

The Akyga AK-ND-C17 USB-C adapter allows you to charge older HP and ASUS laptops with a 4.8x1.7 mm connector using a USB-C PD charger. If you lose your original power supply, this adapter offers a universal solution for charging different devices with one charger, saving space when traveling. Before use, it is worth checking the power of the power supply to ensure adequate power supply. Akyga AK-ND-C17

Module with real-time clock and CR1225 battery socket for voltage backup. It communicates via the I2C interface. Seeed Studio 103030277

Audio module with DAC, headphone amplifier and display, designed to work with the Raspberry Pi. It is based on the PCM5100A system and communicates via the I2S interface. Pimoroni PIM482

Ultra-low-power 32-bit MCU ARM®-based Cortex®-M0+, 64KB Flash, 8KB SRAM, 2KB EEPROM, LCD, USB, ADC, DAC, AES, LQFP48, STM, RoHS

Light ring with 24 single-color LEDs controlled by the I2C interface. The board can be powered with 5 V and consumes up to 5.5 mA per diode. Seeed Studio 104030013

32-bit microcontroller from the STM32L1 family (low power series) with ARM Cortex-M3 core, 256kB Flash memory, 32kB RAM, 8kB EEPROM, clock speeds up to 32MHz and I2C, SPI, UART / USART interfaces, USB DMA, PWM, WDT, A / D 12b in the LQFP64 housing. STMicroelectronics STM32L152RCT6

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

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

Module with 13 QTR type optocoupler with RC (digital) output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4153