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

8-channel voltage level converter allowing for connection of systems operating with the voltage level of 1.8 V, 2.5 V, 3.3 V and 5 V. SparkFun BOB-19626

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

Servo driver based on the Raspberry Pi RP2040 microcontroller. It allows you to control up to 18 servos, has 6 analog inputs and a QW/ST connector for connecting additional sensors. Pimoroni PIM613

Module with 4 digital inputs, 4 outputs and 6 analog inputs. It communicates via the RS485 interface and supports the Modbus RTU protocol. The board is enclosed in an industrial housing. Wellpro WP9039ADAM

Reverse voltage protection module operating in the 4–75 V range and up to 8 A, based on a low-resistance MOSFET with Rds(on) below 15 mΩ. It does not block reverse current. Designed for power supply systems, including battery-powered applications. Pololu 5358.

An expansion board for XIAO modules that allows you to control seven output channels for slim, 3V COB LED strips. The board offers three high-current channels for main lighting and four low-current channels for fade-in and fade-out effects. Power can be supplied by a 3.7V Li-Po battery or a 5V/2A USB adapter, and a Grove I2C connector allows for sensor integration and intelligent light control. Seeed Studio 100079172

Single-channel bipolar stepper motor driver based on the MP6603 IC, supporting microstepping down to 1/8 step and operating with a motor supply voltage of 8–55 V. The module can deliver up to approximately 2 A continuous current per phase without additional cooling and up to 4 A peak. It features adjustable current limiting via a potentiometer and a control interface compatible in many applications with popular A4988 driver carriers. This version includes factory-soldered header pins, allowing direct connection to breadboards or sockets compatible with A4988 modules. Pololu 5691

Single-channel bipolar stepper motor driver based on the MP6603 chip, supporting microstepping down to 1/8 step and operating with a motor supply voltage of 8-55 V. The module can deliver approximately 2 A continuous current per phase without additional cooling and up to 4 A peak, features adjustable current limiting via a potentiometer, and offers an interface compatible in many applications with popular A4988 carrier boards. Version without soldered header pins, intended for custom connector installation. Pololu 5690

Step-Up/Step-Down converter module based on the S13V10F5 system. It has an input voltage from 2.8 to 22 V and an output voltage of 5 V. The current efficiency of the converter is up to 1 A. Pololu 4083

This ESC is designed for advanced applications like drones, RC models, and high-powered vehicles, supporting 5- to 12-stage LiPo power supplies. Equipped with a 32-bit STM32G071 microcontroller and PWM support up to 128 kHz, it provides very smooth and precise motor control. It offers continuous current up to 200 A and burst current up to 250 A, and thanks to efficient MOSFETs and a CNC heatsink, it remains stable even under heavy loads.

Data logger with USB type C connector. Data is received via the UART interface and saved on the built-in Flash memory with a capacity of 128 MB. DFRobot TEL0147

8-channel module with relays, designed to work with the Raspberry Pi. It can switch 250VAC/7A or 30VDC/10A signals. SB Components 21871

Module with a precise clock RTC DS3231 dedicated to the Raspberry Pi Pico. Communication via the I2C interface. SB Components 21420

Step-Up/Step-Down converter with an output voltage of 3.3 V, an input voltage of 2.5 to 15 V and a maximum current of 600 mA. DFRobot DFR0568

A 24-bit analog-to-digital converter designed for accurate analog signal measurements in measurement systems and electronics projects. The device supports four single-ended or two differential inputs and offers a maximum sampling rate of up to 2 kSPS and programmable gain ranging from 1 to 128. The module has a built-in 2.048 V reference voltage, a temperature sensor, and programmable current sources, facilitating interoperability with various sensor types. Communication is via an I2C interface using STEMMA QT/Qwiic connectors. Adafruit 6432

Universal driver for DC and LED motors. It can work with a supply voltage from 5 V to 24 V and a load up to 10 A. DFRobot DRI0050

Sound recording module with I2C interface. It can store sounds up to 100 seconds long. DFRobot SEN0197

<p>ESC brushless motor speed controller designed for FPV drones and RC models. Equipped with a 32-bit STM32G071 processor and PWM support up to 128 kHz, it ensures smooth and responsive motor operation. It supports DShot, PWM, Oneshot, and Multishot protocols, offering broad compatibility with flight controllers, as well as a continuous current of 70 A and a maximum current of 110 A. It has a built-in adjustable BEC (5-12 V) SEQURE SQESC 2670 ESCape32 + BEC.</p>

A compact voltage converter module that reduces input voltage from 6.3 to 65 V to a stable 6 V at currents up to 700 mA. It features high efficiency, low quiescent current (<0.4 mA), and short-circuit and thermal protection, ensuring safe and efficient operation. Its small size and ease of integration make it ideal for mobile devices, battery-powered designs, and systems requiring stable power. Pololu 5434