2-channel SSR 240V / 2A relay module with fuse. modSSR-2CH

DC-DC Step Down converter module with input voltage from 7 to 24 V and output voltage of 5 V. Can supply currents up to 4 A. DFRobot DFR0831

A switching converter that regulates 24V 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 5588

Micro HDMI adapter with FFC connector. Designed for prototyping devices with HDMI interface. Waveshare Micro HDMI Adapter Vertical

CAN transceiver module based on the TJA1051T/3 chip. Allows you to connect a board with native CAN support (the transceiver will convert 3V signals into differential CAN signals) to a network of devices. Adafruit 5708

USB-UART converter based on the CH340N chip. It uses a USB type C connector and ensures stable and secure communication between the computer and devices using the UART interface

Zeenko ZK05-BM is a low-noise, wideband RF amplifier with battery power, intended for operation in the 100 kHz – 6 GHz band. It offers stable gain, low distortion and a compact form, ideal for mobile, measurement and radio applications.

Crossover for tweeters with a crossover frequency of 3400 Hz. It works with speakers with an impedance of 4 to 8 Ω and offers power up to 60 W

Pulse generator module based on the NE555 system with frequency control using a potentiometer. It is powered with the voltage ranging from 5 V to 12 V

Step-up DC-DC converter module, 0.9-5V input voltage, 5V output voltage (max. 600 mA) connected to the USB socket. There is a diode on the board indicating the power connection. modPS

Compact and efficient module designed for precise control of bipolar stepper motors, offering microstepping down to 1/32 step and maximum current up to 2 A in peak mode. Thanks to advanced features such as QuietStep (APFD) algorithm, built-in protections and pin compatibility with A4988, it is perfect for hobby, educational and industrial projects. Blue Edition version with four-layer board and 2 oz copper provides better heat dissipation, increasing reliability of operation even at higher loads. Pololu 5340

Audio receiver with Bluetooth 5.0 communication based on the QCC3008 module. It is equipped with an insulated converter that enables power supply with 5 V voltage

Module with a voltage level converter 3.3 V - 5 V intended for use in the Qwiic system. It has a built-in Step Up converter providing power supply with a voltage of 5 V and a current of up to 100 mA. SparkFun SPX-17238

Module with a relay and WiFi communication. Compatible with ESP-01 or ESP-01S

The lead module for the ATX power supply has 24 pins, a switch and 4 voltage modes, providing flexibility in device testing. Its compact dimensions of 12.8 cm x 4.8 cm and built-in fuses guarantee easy installation and safe use.

The Adafruit 5974 module with the HX711 converter enables precise reading of signals from strain gauges and load cells based on a Wheatstone bridge, offering 24-bit resolution and selectable gain. With an integrated screw terminal and options for sampling rate and channel configuration, it is used in projects involving force, pressure, or weight measurement in IoT systems, electronic scales, and mechanical testing.

The module protects the load against reverse polarity to -60 V, but does not block reverse current, which is desirable in applications such as motor control. It uses the LM74500-Q1 controller and a MOSFET transistor. Thanks to its low impedance (1.5 mΩ), it supports currents up to 25 A continuous and 50 A transient, providing reliable protection and the possibility of easy assembly. Pololu 5387

The 2x40W Bluetooth amplifier module XY-P40W is a versatile audio amplifier with a wide voltage range and Bluetooth 5.0 compatibility, enabling wireless audio transmission at a distance of up to 15 meters. It has protective mechanisms that make it not only a powerful but also a safe tool for designing your own audio devices.

CP2102 USB to UART Module, USB micro connector

High-quality digital-to-analog converter that allows for pure stereo audio playback without the need for I2C configuration or the MCLK pin. It supports I2S signals (BCLK, WSEL, DIN) and audio formats up to 32 bits and 384 kHz, providing an excellent signal-to-noise ratio (110 dB). Audio output is available via a 3.5 mm jack or on-board pads, and the module works best as a line output to amplifiers and audio systems. Adafruit 6251