Features: The for Microed bit Expansion Board is a versatiled motor and servo driver board featuring 4 independent motor controls and 8 servo controls,for fulfilling diversed driving requirements in robotics and automation projects. With symmetrical layout, this expansion board integrates multiple onboards functions such as a WiFi camera serial port, 7 module port, 4 I2C port,with lights making it perfect for creative DIY endeavors. This product for maker, developers, and hobbyists exploring electronics and robotics, providing platform for experimentation and innovation. For maker lab and DIY projects, the expansion board's compatibility with block robots, car allows users to effortlessly expand their creations' capabilities. With protective features like reverse polarity, low voltages, and overcurrent protecting, along with flexible power option including 18650 battery holder and Microed USB power, this expansion board ensures both safety and convenience for your electronic projects. Specifications: for Microed bit Expansion Board Size:about 95x46mm/3.74x1.81in Featuring 4 independent motor controls and 8 servo controls With WiFi camera serial port, 7 module port, 4 I2C port, lights Package Includes: 1PC for Microed bit Expansion Board note: Due to problem of lighting effect, there might be tolerances in product, please understand. Please allow 0-1cm error due to the measurement.