ACS712 Current Sensor Module โมดูลวัดกระแสสำหรับ Arduino

Reading Sensing and Controlling the current flow is a requirement in a wide variety of applications including, over-current protection circuits, switching mode, battery chargers, power supplies, digital watt meter and programmable current source, etc. The ACS721 current reading module is based on ACS712 sensor which can detect AC, DC current signals accurately. 

The maximum AC / DC can be detected using ACS712 will reach 30 amp and the present current signal can read via analog IO port of Arduino, Products available for this module are 30A, 20A, 5A. for this demonstration we will use the ACS712 30A.