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 24-bit ADC NAU7802 converter. It enables reading data from strain gauges and scales. I2C interface. SparkFun SEN-15242

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

Two-channel relay module equipped with optoisolated control inputs and relays with 5V coils. Designed for controlling loads up to 10A at 250VAC from a microcontroller or development platforms

An efficient step-down converter that reduces the input voltage to 3.3 V at a maximum current of 100 mA, offering high efficiency thanks to its low quiescent current (<20 μA). It supports input voltages from 3.3 V to 65 V, has short circuit and overheating protection, making it a reliable and energy-efficient solution. Pololu 5362

DC-DC step-down converter module 5V 16A used to convert energy from 6-24V input voltage to stable 5V, providing up to 16A current. Thanks to high conversion efficiency (over 90%) and low ripple (<20mV), it is ideal for powering sensitive devices in applications such as robotics, drones or LED lighting systems. Additionally, built-in overheating and short-circuit protection mechanisms ensure reliable operation even in difficult conditions. DFRobot DFR1202

Compact module that allows easy changing of I2C sensor addresses, allowing coexistence of multiple devices with the same address on one bus. With DIP switches and optional soldering resistors, users can easily configure sensor addresses without having to modify the code or use external components. DFRobot DFR1185

Module with a button, LED diode and a red cap. DFRobot DFR0029-R

Iduino relay module with 2 channels and optoisolation, enabling control of loads up to 10 A at 250 V AC or 110 V DC. Powered by 5 V, it is ideally compatible with microcontrollers and development kits, providing safe and convenient circuit switching.

The HW-212 enables precise voltage and current regulation across a wide range of parameters, while maintaining high efficiency and clear operational control via an LCD display. The module is ideal for test benches, electronics power supply projects, battery charging, and high-power LED control

Finger Vein Scanner Module (A) is an advanced biometric module for finger vein identification, offering a high level of security, low power consumption, and resistance to harsh environmental conditions. Its fully integrated design and support for standard communication protocols facilitate its use in smart locks, access control systems, and embedded devices, especially in applications requiring reliable user authentication without contact with the skin surface.

Two-channel DC motor driver based on the HR9933 circuit. It allows you to control the movement of drives with a supply voltage of up to 10 V and power consumption up to 1.5 A. DFRobot DRI0040

An efficient step-down converter that steps down the input voltage from as low as 45 V to a regulated output voltage range of 1.4 to 7 V, offering high efficiency and a maximum continuous current of 3.4 A. It has built-in reverse polarity, overload and short circuit protection, and the spread spectrum function reduces EMI interference. Pololu 4873

The trigger module is designed for chargers PD 2.0 and PD 3.0. It is equipped with a USB type C input and USB typ A output. Allows you to power devices with 5 V, 9 V, 12 V, 15 V and 20 V and test chargers by replacing the PD device

2.4 GHz radio remote control enables precise and convenient lighting control with the ability to adjust the PWM frequency and connect to multiple dimmers

Bluetooth audio receiver module enclosed in a housing that enables wireless transmission of sounds. It is equipped with a PCB antenna, microphone, 3.5 mm audio jack and control buttons

A switching converter that stabilizes a 15V voltage from an input range of 2.6V to 20V. It offers high efficiency of 70-95% and the ability to operate with a continuous input current of up to 900mA and a peak current limit of 2.2A. With a switching frequency of 1.6MHz and a power-saving mode, it is suitable for both high-performance and low-power applications. Pololu 5586

Audio module with DAC converter and mono amplifier, designed to work with the Raspberry Pi. Pimoroni PIM541

An H-bridge capable of controlling one DC motor in both directions or two unidirectional motors at voltages from 4.5 to 44 V and continuous currents up to 1.3 A. The module offers three operating modes (PH/EN, IN/IN, half-bridge), built-in current limiting and measurement, and protection against overheating, overload, undervoltage, and reverse polarity. Its compact design, flexible logic power supply (1.8–5.5 V), and simple control make it ideal for robotics, automation, and hobby projects. Pololu 4971