Features: The Mini USB Development Board portable, featuring microcontroller for space constrained projects, offering integration and embeddeds development. Equipped with USB interfaces, this board allows direct programming and power supply via USB without the need for additional programmers, and its pin header ensures easy connectivitys with other module and sensors. for electronics enthusiasts, students, and engineers, this development board supports C/C++ programming, making it beginner friendly for DIY projects, learning embeddeds systems, and efficient prototyping. for automation control home devices like intelligent lighting and temperature monitoring, as well as small scale robotics projects requiring movement and sensors data processing. Widely used in STEM education, this board aids in understanding microcontroller fundamental, boasting high performances with speeds up to 20MHz and multiple GPIO pin for connecting LEDs, button, and sensors. Specifications: Materials: Plastic Size:26.8x19.3cm/1.05x0.75inch Package Includes: 5Pcs Digispark Kickstarter MicroUSB Development Board note: Please allow 0-1cm error due to manual measurement. make sure do not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item. Thank you!