直流电机光敏电阻和LCD的结合，LCD直接以数字形式显示光照强度，白天时，直流电机自动正转一段时间后停止，晚上时，直流电机自动反转一段时间后停止。实现了串联的自动升降。-Dc motor photosensitive resistance and the combination of LCD LCD display light intensity in digital form, directly during the day, the dc motor is automatically after a period of time to stop, in the evening, the dc motor reversal after a period of time to stop automatically. The series can be automatically lift.