水箱水位自动控制系统,通过超声波传感器测试到水位的值传入到单片机,单片机通过控制直流电机和步进电机从而达到调整水位的目的-Water tank water level automatic control system, through the ultrasonic sensor test to the value of water into the single chip microcomputer, microcomputer by controlling dc motor and stepp