PC817 module with 4 optocouplers

Pololu MQ Gas Sensor Carrier

ADC converter module with 7 measurement channels (measuring 0-5V, 0-10V voltage and 4-20 mA current). Communicates via RS485 industrial interface using Modbus RTU protocol. R4AVA07

Converter that provides easy communication between RS232 and RS485 interfaces and RJ45 Ethernet. Configurable via web page or AT commands. USR-TCP232-306

USB - UART converter based on the FT232RL chip. Compatible with voltages of 3.3 V and 5 V, has been equipped with a USB type C connector. Waveshare FT232 USB UART Board (Type C)

Your 5V system can wield great power with this big, beefy relay board. Kit contains all the parts you need to get your high-power load under control. Sparkfun KIT-13815

Cable with USB-UART converter dedicated to TFmini and TFmini Plus distance sensors. Ended with a USB type A plug and goldpin connectors. Benewake USB-Dupon

This synchronous switching step-down (or buck) regulator takes an input voltage of up to 40 V and efficiently reduces it to 3.3 V with an available output current of around 15 A. Pololu 2880

The SRC 2000W dimmer module is a compact and efficient solution for precise voltage regulation in AC circuits, ideal for controlling lighting, motors and heaters up to 2000 W

Module with 2 relays SSR G3MC202P with a load up to 2 A. The board is equipped with a Grove connector and is controlled via digital inputs. Seeed Studio 103020134

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

Universal USB2.0 adapter for JTAG, UART and GPIO based on the FTDI FT2232H chip. The adapter card converts signals from USB2.0 to standard serial or parallel interfaces of embedded systems such as JTAG, SPI, I²C and UART. Compatible with Xilinx tools. Trenz TE0790-03

FRAM memory module with MB85RC256V chip with a capacity of 32 kB. It is supplied with the voltage from 2.7 to 5.5 V and communicates via the I2C interface

8-channel voltage level converter module with an input voltage of 12 V and an output voltage of 3.3 V. Unidirectional, based on resistor dividers. Numato Lab NLVD00008

C-Mount lens. 16 mm focal length, 24° (H) FoV, manual focus and adjustable aperture. Designed to work with the Raspberry Pi HQ camera. ArduCAM LN046

USB programmer for Breadboard Mates products. It offers a simple connection with a MatesBUS compatible device. SparkFun PGM-19262

Servo driver with UART serial interface. Equipped with an ESP32 module with WiFi and Bluetooth wireless communication. Waveshare Servo Driver with ESP32