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

3-channel brush motor controller module with PWM signal mixing function. It allows you to control three DC motors with a current consumption of up to 15 A per channel

The EEPROM memory module with the built-in AT24C32D chip allows storing data without loss after switching off the power supply. MOD 50

16-channel GPIO expander with an I2C interface microcontroller can interface with 16 fully configurable digital input/output pins. It can produce PWM signals, so you can dim LEDs. It can be set to blink or even breathe pins at varying rates. With a built-in keypad engine, it can interface with up to 64 buttons set up in an 8x8 matrix. BOB-13601

A switching converter that stabilizes a 5V input voltage from 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 5581

High-speed communication module powered by ADM582E. By communicating with the device via UART, users can take advantage of the RS485 communication protocol with speeds up to 16 Mbps. 410-310

Step-Down converter with an output voltage of 5 V, input voltage from 4.5 to 40 V and a maximum current of 2 A. The board is equipped with a segment LED display and a USB output

BMS protection module designed for 13 Li-Ion cells. It has a charging function with balancer option and an over-discharge protection function. Dedicated to an electric bicycle or scooter

Audio module designed for Teensy 3.2, 3.5, 3.6 and 4.0. It uses the PT8211 16-bit digital to analog converter (DAC) chip. PJRC PT8211-AUDIO-KIT

Absolute encoder module with 8421 (BCD) coding with 16 positions. Vertical mounting. DFRobot DFR0721

A switching converter that regulates 9V 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 5584

This SPST solid-state relay module allows for safe switching of DC circuits up to 60 V and 7 A, offering galvanic isolation and low conduction resistance (approx. 30 mΩ) thanks to the use of back-to-back MOSFET transistors. It features fast switching time (up to 1 ms), low control current consumption (approx. 10 mA), and the ability to control a signal from 2.7 to 40 V. Its compact design, lack of mechanical components, and the ability to mount on 2.54 mm connectors or screw terminals make the module a durable and quiet solution for systems requiring reliable isolation and long service life. Pololu 5420

Membrane keypad module with 12 (3x4) buttons. It is equipped with a tape terminated with a 7-pin connector

USB TO RS232/485 (C) is a versatile signal converter based on the reliable FT232RNL chip, enabling stable serial communication via a USB port. With support for both RS232 and RS485 and broad system compatibility, it is suitable for testing industrial devices, programming microcontrollers, and integration with computers in various hardware environments.

DC-DC Step-Up converter U3V40F7 with an output voltage of 7.5 V, an input voltage of 1.3 to 7.5 V and a maximum output current of 4 A. Pololu 4014

The Step-Down D24V3F5 Buck Voltage Regulator module gives the output voltage of 5V with a wide input voltage range of 7-42V and a maximum output current of 300 mA. Pololu 2098

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

An educational kit that teaches the basics of electronics with an LED that changes colors in response to the lack of light. The kit includes all the necessary components, including a light sensor, a color LED, and a USB cable, and detailed instructions and teaching materials from Kitronik make assembly and introducing the topic of electronics into teaching easy. Kitronik 2184

A new version of the popular mono amplifier kit, capable of amplifying audio from any source, such as MP3 players, using the NCP2890 with an output power of up to 1 W. The kit comes pre-assembled, including a jack cable, 8Ω speaker, and a battery holder for two AA batteries, allowing for quick start-up and ideal for portable DIY audio projects. Kitronik 2165B

Speech recognition module based on the LD3320 chip. Can store up to 50 keywords. It uses two miniJack connectors to connect headphones and a microphone