This version is in the original version of the optimization, mainly for foreign customers on product quality and functional requirements of the case of high design, both to ensure that the original and fully compatible with the same, but also easy to use. Advantages: 1 completely solve the traditional UNO board win7 and win8 system is not compatible with the above instability. Especially in the pirated 64-bit WIN7 system, the official board can not be installed driver, and this version is very simple and easy to install. 2. Increase the pin socket, easy to use line. 3. Replace the 16u2, so that the cost reduced to half, consumers get the most benefits Download the program simple and convenient. You can simply use the sensor, a variety of electronic components connected (such as: LED lights, buzzers, buttons, photoresistors, etc.), to make all kinds of interesting works. The use of high-speed microprocessor controller (), the development of user interface and environment are very simple, easy to understand, very suitable for beginners to learn. Performance description I / O digital input / output terminals 0 ~ 13. I / O analog input / output terminals 0 ~ 5. Support ISP download function. Input voltage: connected to the computer USB without external power supply, external power supply 5V ~ 9V DC voltage input. Output voltage: 5V DC voltage output and 3.3V DC voltage output. Using Atmel microprocessor controller adafruit breadboard,smallest board, device Related Products:bms,4s bms,bms 4s,pcb bms protection board,battery bms,bms board,lithium battery protection board,protection board 1. Enhanced compatibility: The UNO R3 Development Board is optimized to meet the and functional requirements of our foreign customers. It maintains full compatibility with the original version while ensuring ease of use, making it the choice for all users. 2. Improved stability: Unlike traditional UNO boards, this version completely solves compatibility issues with Windows 7 and 8 systems, providing a stable and reliable performance. It is especially effective in overcoming driver installation problems faced by users of pirated 64-bit WIN7 systems. 3. Convenient connectivity: With the added pin socket, connecting lines becomes effortless. This feature allows for easy integration of various electronic components such as LED lights, buzzers, buttons, and photoresistors, enabling you to create an array of interesting projects. 4. Cost-effective solution: By replacing the 16u2, we have managed to significantly reduce the cost, providing consumers with maximum benefits. Additionally, downloading programs and using sensors has never been more straightforward, making this board an excellent choice for beginners and experienced users alike. 5. Versatile functionality: Equipped with the high-speed microprocessor controller , our UNO R3 Development Board offers a user-friendly interface and environment. Its I/O digital input/output terminals ranging from 0 to 13, as well as analog input/output terminals from 0 to 5, provide ample flexibility. With support for ISP download function and multiple voltage outputs (5V and 3.3V), this board caters to a wide range of applications and projects.