Description
Expand Your Arduino’s Capabilities with MCP23017 I/O Expansion
Unlock the full potential of your microcontroller projects by adding 16 additional general-purpose input/output (GPIO) pins to your Arduino, ESP32, or Raspberry Pi. This 3-piece pack of MCP23017 I2C interface modules provides a simple, reliable, and cost-effective solution for projects that require more digital I/O lines than your main board can offer. Whether you are building a complex sensor array, controlling multiple LEDs, or managing motor drivers, this expansion board makes wiring cleaner and logic more manageable.
Key Features & Highlights
- 16-Bit I/O Expansion: Adds 16 new digital I/O pins via the I2C bus, significantly increasing your project’s connectivity options.
- Wide Compatibility: Fully compatible with Arduino (Uno, Mega, Nano), ESP8266, ESP32, Raspberry Pi, and other I2C-enabled microcontrollers.
- Simple I2C Communication: Uses only two wires (SCL and SDA) to communicate, saving pin count and simplifying wiring complexity.
- High-Performance Chip: Built around the Microchip MCP23017 IC, ensuring stable data transmission and low power consumption.
- Value 3-Pack: Includes three modules, allowing you to expand up to 48 additional I/O pins for large-scale projects or keeping spares on hand.
Easy Integration & Application
Designed for ease of use, this module features standard pin headers for straightforward connection to your breadboard or shield. The board includes clear silkscreen labels for SDA, SCL, VCC, and GND, making setup quick and error-free. Ideal for educational purposes, prototyping, and final product development, this I/O extender is an essential tool for any electronics enthusiast looking to scale their projects without the need for a larger, more expensive main controller.
Package Includes
- 3 x MCP23017 I2C 16-bit I/O Extension Module Boards






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