Adafruit I2C to 8-Channel Solenoid Driver – solenoid driver with STEMMA QT / Qwiic interface

4-channel PCIe to SATA 3.0 port expander. It can be powered with 12 V via a PCIe connector or 5/12 V via an external DC connector. Waveshare PCIe-TO-SATA-4P

Module with a 16-channel GPIO expander with the ability to control LEDs. It communicates via the I2C interface. Waveshare AW9523B IO Expansion Board

Module with 16 digital outputs. It communicates via the RS485 interface and supports the Modbus RTU protocol. The board is enclosed in an industrial housing. Wellpro WP8027ADAM

DAQ device based on USB communication and equipped with 8 counter inputs, 4 PWM outputs and 8 digital IOs. Digilent 6069-410-028

Module with IO expander equipped with 14 inputs/outputs, including 8 connected to the ADC converter and 6 to PWM outputs. It communicates via the I2C interface and is compatible with the Raspberry Pi. Pimoroni PIM517

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

Adapter dedicated to the Nintendo Wii Nunchuck. It allows you to connect the controller to the development board via the I2C interface. Adafruit 4836

Module with a 16-channel GPIO expander with the ability to control LEDs. Equipped with a STEMMA QT connector, it communicates via the I2C interface. Adafruit 4886

Module with three 4-20 mA analog outputs. It communicates via the RS485 interface and supports the Modbus RTU protocol. The board is enclosed in an industrial housing. Wellpro WP3078ADAM

8-channel IO expander with 6 analog inputs with 10-bit resolution. Communicates via USB interface. It has compact dimensions, making it suitable for small devices. Numato Lab GP80002

Module with 16-channel IO expander MCP23017 controlled by the I2C interface. Designed for minicomputers Raspberry Pi. Adafruit 4132

16-channel IO expander with 7 analog inputs with 10-bit resolution. Communicates via USB interface. It has compact dimensions, making it suitable for small devices. Version with connector at the top. Numato Lab GP160002

BOB-13906

KAmod I2C-Mini Out8 enables easy expansion of microprocessor systems with eight switching outputs for voltages and currents typical of low-voltage load control. Compatibility with the I2C bus and the ability to connect up to 8 modules in a single network make it an ideal solution for automation systems, lighting and power control, and other applications requiring flexible control of multiple circuits.

An 4-channel I2C expander module, which is based on the TCA9546A chip. It allows connecting several devices with the same address to a single I2C interface. Adafruit 5664

8-channel analog acquisition module with default current measurement mode (0–20 mA), designed for industrial applications requiring stable and precise data acquisition. Compatible with current sensors, it supports RS485 communication and the Modbus RTU standard, allowing easy integration with SCADA systems and PLC controllers. Galvanic isolation and noise immunity make it suitable for environments with high EMC requirements. Ideal for industrial process monitoring, environmental parameter measurement, and building automation.