TENSTAR 2pcs MCP23017 16Bit I/O Expansion Board Module Pin PCB IIC I2C Interface To GIPO Converter 25mA

Description

Upgrade your microcontroller projects with the TENSTAR 2pcs MCP23017 16‑Bit I/O Expansion Board Module. Designed for hobbyists, engineers, and makers, this compact I2C‑to‑GPIO converter adds 16 additional digital I/O pins to any Arduino, Raspberry Pi, or compatible development board—perfect for expanding sensor arrays, LED displays, and control circuits without sacrificing space.

Key Highlights

• Dual‑pack of MCP23017 chips – each provides 16 configurable GPIO pins (total 32 pins)
• Standard I²C interface (SCL & SDA) for easy integration with 3.3 V or 5 V systems
• Each pin supports up to 25 mA sink/source current, ideal for LEDs, relays, and small actuators
• Compact PCB layout (30 mm × 20 mm) fits tight enclosures and breadboards
• Built‑in pull‑up resistors and interrupt pins for responsive, low‑latency control
• Fully compatible with Arduino, ESP32, Raspberry Pi, BeagleBone, and other I²C‑enabled platforms

Why Choose TENSTAR?

TENSTAR delivers reliable, high‑quality components at an affordable price. Our MCP23017 expansion boards are rigorously tested for stable I²C communication, ensuring your projects run smoothly from prototype to production.

Technical Specifications

• Chip: Microchip MCP23017 (16‑bit I/O expander)
• Operating Voltage: 1.8 V – 5.5 V
• I²C Address Range: 0x20 – 0x27 (configurable via address pins)
• GPIO Current per Pin: 25 mA (max)
• Pin Count: 16 GPIO per module (32 total in 2‑pack)
• Interface: I²C (SCL, SDA) + VCC, GND, RESET, INT‑A, INT‑B
• Dimensions: 30 mm × 20 mm × 1.2 mm
• Package: Through‑hole pins for breadboard or PCB soldering

Easy Integration

Simply connect the VCC, GND, SDA, and SCL lines to your host board, set the I²C address using the A0‑A2 pins, and start programming with the Wire library (Arduino) or SMBus (Python). Sample code and wiring diagrams are included in the product package.

Ideal Applications

• Home automation panels and smart lighting control
• Robotics – motor drivers, sensor arrays, and status LEDs
• Industrial monitoring – temperature, pressure, and flow sensors
• Educational kits and STEM projects that require extra I/O
• Prototype expansions for IoT devices and wearable electronics

Boost your project’s capability with TENSTAR’s reliable MCP23017 I/O expansion board – the smart, scalable solution for all your digital I/O needs.