Product Description: I2C Expansion Board with 16 IO Pins Unlock the full potential of your projects with our I2C Expansion Board, designed to provide seamless connectivity and control for your electronic applications. This versatile board features 16 IO pins and supports up to 4 expansion modules, making it an essential tool for hobbyists and professionals alike. Compatibility Level Our I2C Expansion Board is equipped with an onboard level conversion circuit, ensuring compatibility with both 3.3V and 5V working levels. This feature allows for smooth integration with various devices, and changes in the state of an input port can generate an interrupt output (INT), enhancing your project’s responsiveness. Support for 4 Expansion Modules Easily expand your system with support for up to 4 I2C expansion modules. The I2C communication address can be conveniently set by modifying the short circuit AO and A1 solder joints, allowing for flexible configurations tailored to your specific needs. I2C Interface Control Simplify your wiring with our I2C interface control, which requires only 2 signal lines to expand to 16 I/O ports. This efficient design minimizes clutter and maximizes functionality, making it easier to manage multiple connections in your projects. Current Controllable The extension module supports a 16-channel common anode constant current ED drive, offering 256-step linear dimming capabilities. This feature allows for precise control over brightness and power, making it ideal for LED applications and other projects requiring fine-tuned current management. Two Interface Types Versatility is key with our I2C interface expansion board, which provides two interface types: PH2.0 terminal and pad. This dual interface design supports the parallel connection of multiple I2C modules, giving you the flexibility to expand your system as needed. Elevate your electronic projects with the I2C Expansion Board featuring 16 IO pins. Its compatibility, expandability, and control features make it the perfect choice for anyone looking to enhance their I2C applications. Whether you are a hobbyist or a professional, this board will help you achieve your project goals with ease and efficiency.