Abundant Tutorial Project Eesources and High-Quality Technical Support: You can find a wealth of tutorials, project cases, and more on the DFRobot Community. If you encounter any issues during the product usage, you can access top-notch technical support services. User-Friendly Interface Design: DFRduino UNO R3 adopts a unique color-coded interface design, with red representing power, blue for analog I/O, and green for digital I/O, making it easy for users to connect sensors and identify interface types. Convenient USB Power Supply: No need for an external power source - simply power your device through the USB interface for convenience and speed. With a built-in 500mA self-recovering fuse, it prevents USB power overload and ensures both your device and computer's safety. Featuring an additional 9VDC input interface for various power scenarios and automatic switching between USB and external power, this smart power supply offers efficient power management for all your needs. Easy-to-use, High-performance ATmega328 chip: DFRduino UNO R3 features a user-friendly DIP package ATmega328 chip, allowing you to easily replace and upgrade firmware without professional knowledge. Whether developing new projects or prototyping, this chip provides stable and reliable performance to help you effortlessly tackle various challenges. Compatible with Arduino UNO R3 and Arduino IDE: DFRduino UNO R3 is compatible with Arduino UNO R3 and Arduino IDE and suitable for electronics enthusiasts, engineers, educators, makers, and more in various application scenarios.