A compact controller that enables precise control of bipolar stepper motors. It offers high precision movement thanks to the ability to control a stepper motor with a resolution of up to 1/128 steps and two control interfaces - clock-in step control and serial commands. SparkFun ROB-25167

Waterproof USB Type-C connector with cables. It has only two lines and can be used as a power adapter

A modern current sensor with a measurement range of -40 A to +40 A, combining the Hall effect with an inductor, allows for precise measurements of both DC and AC components up to 5 MHz. Its lightning-fast response time and low path resistance make it ideal for motor control systems, power converters, and protection systems. Pololu 5231

Module with 12-channel MPR121 capacitive touch sensor. The board is equipped with a Stemma QT connector and communicates via the I2C interface. Adafruit 4830

The Step-Down panel-mounted converter module enables precise regulation of input voltage (6V-70V) and output current (0-5A), with a maximum output power of 300W, conversion efficiency up to 95%, and short-circuit and anti-reverse connection protection. The device, with dimensions of 120mm x 64mm x 72mm, is equipped with continuous regulation functions, with a resolution of 0.01V for voltage and 0.001A for current, and operates in a temperature range of -10 to +75 degrees Celsius.

Shield with a 3.5-inch LCD display with a touch panel. The screen has a resolution of 480x320 pixels, and communication is via the SPI interface. Waveshare 3.5inch TFT Touch Shield

Module with temperature and humidity sensor TH02. The board is equipped with a Grove connector and communicates via the I2C interface. Seeed Studio 101020074

Module with audio amplifier and 8 Ω speaker with a power of 1 W. The board is equipped with a STEMMA connector. Adafruit 3885

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

A protection module that acts like a perfect diode, allowing current to flow in only one direction with minimal energy loss. It supports voltages from 2.7V to 23V and currents up to 5A, providing effective protection against overvoltages and reverse current. It features an IMON output for current monitoring and a Power Good indicator to indicate correct operation. Its screw terminals and compact design make it ideal for battery-powered projects. Adafruit 6359

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 

1.8-meter USB 3.0 cable with USB A and B plugs, used for data transmission and powering devices, often used for printers and scanners. Akyga AK-USB-09

Module with proximity and ambient light sensor based on the VCNL4020 system. It allows you to detect obstacles in the range from 0 to 20 cm and measure light intensity from 0.26 to 16,000 lux. It communicates via the I2C bus. Adafruit 5810

Akyga AK-AD-15 is a cable adapter that allows you to connect a mouse (green connector) and a keyboard (purple connector) with a PS/2 plug to a USB port on your computer. Akyga AK-AD-15

Module with a black and white e-Paper display with a diagonal of 2.13". It is equipped with an SPI interface for displaying an image and I2C for a touch panel. Waveshare 2.13inch Touch e-Paper HAT

RS-232 D-Sub (f) / D-Sub (m) cable, 2 m long. Akyga AK-CO-01

Module with 16-bit AD5693R DAC converter with built-in EEPROM memory. Equipped with a STEMMA QT connector, it communicates using the I2C bus. Adafruit 5811

Communication module with the SIM800C system designed for Raspberry Pi minicomputers. Adds support for GSM/GPRS networks. Waveshare SIM800C GSM/GPRS HAT

Pink LED strip with SMD 5050 diodes. It is powered by 12 V DC, has a length of 5 m and 120 LEDs/m. Protection class IP65 (waterproof)