单片机采集两组光敏电阻的阻止，计算电阻差值，以控制步进电机动作，调整x，y轴，使太阳能电池板始终与太阳光垂直，使太阳能板达到最大光效。(Single chip microcomputer collects two groups of photosensitive resistors to prevent and calculate resistance difference, so as to control stepper motor action, adjust X and Y axis,