使用STM32f407做主控，使用OV2640做摄像头，用摄像头捕捉小球位置，通过舵机操纵平板使小球不掉落。(STM32f407 is used as master control, OV2640 is used as camera, camera is used to capture the position of the ball, and the steering wheel controls the flat plate to keep the ball from falling.)