- Dual-Layer PCB Design: The expansion board features a robust double-layer construction. With wiring on both sides, it ensures a stable and reliable circuit, eliminating issues like bad contact and unstable signal transmission. - Compatibility: This board is specifically designed for the 38-pin narrow version of the ESP32 without mounting holes. Note that it is not suitable for other versions. - GPIO Extension: With the capability to extend a GPIO pin from the ESP32 development board, this breakout board facilitates easy reuse of all pins in smart home projects. - Versatile Connections: The board offers both pin header and screw terminal options, allowing users to choose the best connection method for their specific purposes. Practical Applications: - Smart Home Projects: Ideal for connecting various sensors and modules, making your home smarter and more efficient. - Prototyping: Streamline your development process by utilizing the GPIO extension for quick and easy testing of multiple components. - Educational Use: Perfect for students and educators working on microcontroller-based projects, enhancing hands-on learning experiences. Made from durable materials, this expansion board provides excellent performance and reliability. Its thoughtful design ensures that you can focus on building innovative projects without worrying about circuit stability.