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MCP2221A USB to GPIO ADC I2C Converter Module – STEMMA QT / Qwiic Compatible

Reference RBD-4117

The MCP2221A USB to GPIO ADC I2C Converter Module allows a computer to directly communicate with I2C devices, GPIO, and analog signals over USB, without using a microcontroller. By connecting this module to a PC via USB, you can control sensors, displays, LEDs, buttons, and other peripherals directly using software such as Python on Windows, Linux, or macOS.

Golden Version

Description
Product Details

Description

Product Description

This module is based on the Microchip MCP2221A chip and acts as a general-purpose USB bridge that provides GPIO control, analog input, DAC output, and I2C communication. The integrated STEMMA QT / Qwiic connector enables quick, solder-free connections to compatible I2C sensors and modules.

Key Features

USB to I2C, GPIO, ADC, and DAC bridge
Direct control from PC without microcontroller firmware
I2C interface for sensors, OLEDs, displays, and drivers
GPIO pins configurable as digital input or output
10-bit ADC inputs for analog signal measurement
5-bit DAC output for basic analog voltage generation
STEMMA QT / Qwiic connector for plug-and-play I2C devices
Works with Windows, Linux, and macOS

Technical Specifications

Parameter	Specification
Core Chip	MCP2221A
USB Interface	USB Type-C
I2C Interface	I2C master
GPIO	4 multifunction pins
ADC Resolution	10-bit
DAC Resolution	5-bit
Logic Voltage	3.3V
Onboard Regulator	3.3V
Operating System Support	Windows, Linux, macOS
Connector	STEMMA QT / Qwiic JST-SH 4-pin

How to Use

Connect the module to your computer using a USB Type-C cable
Connect I2C sensors or devices using a STEMMA QT or Qwiic cable
Use Python or other supported software libraries to control GPIO, read ADC values, or communicate over I2C
No firmware flashing or microcontroller programming required

Applications

Rapid I2C sensor testing and evaluation
USB-controlled GPIO and LED projects
Data acquisition and analog signal monitoring
PC-based automation and prototyping
Educational and laboratory experiments
Debugging and development of I2C devices

Package Includes

1 × MCP2221A USB to GPIO ADC I2C Converter Module

Why Choose This Module

This MCP2221A module eliminates the need for a separate microcontroller when testing or controlling hardware from a computer. With built-in USB, ADC, DAC, GPIO, and I2C support, it provides a compact and flexible solution for rapid prototyping, automation, and sensor interfacing. The STEMMA QT / Qwiic compatibility ensures clean, reliable connections with no soldering required.

Upgrade your workflow and connect your computer directly to the hardware world with this versatile MCP2221A converter module. Order now and simplify your development process.

Product Details

Reference RBD-4117

In stock 10 Items

Specific References

EAN13: 4117

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MCP2221A USB to GPIO ADC I2C Converter Module – STEMMA QT / Qwiic Compatible

Product Description

Key Features

Technical Specifications

How to Use

Applications

Package Includes

Why Choose This Module

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