Description DescriptionPackage : TQFPis_customized : YesOperating Temperature : 0-85Dissipation Power : 1wSupply Voltage : 3-5vApplication : ComputerCondition : NewType : Logic ICsBrand Name : YUN TUDIOOrigin : Mainland ChinaText code:Link the S port of this sensor connect to A0 port of the board, use the following procedure to read analog values. And then display on the computer through the serial port. define ELECTRICITY_SENSOR A0 //float amplitude_current; //float effective_value; //void setup(){Serial.begin(9600);pins_init();}void loop(){int sensor_max;sensor_max = getMaxValue();Serial.print(sensor_max = Serial.println(sensor_max);//the VCC on the Grove interface of the sensor is 5vamplitude_current=(float)sensor_max/1024*5/200*1000000;effective_value=amplitude_current/1.414;//Minimum current value can be detected=1/1024*5/200*1000000/1.414=24.4(mA)//Only for sinusoidal alternating currentSerial.println(The amplitude of the current is(in mA)Serial.println(amplitude_current,1);//Only one number after the decimal pointSerial.println(The effective value of the current is(in mA)Serial.println(effective_value,1);}void pins_init(){pinMode(ELECTRICITY_SENSOR, INPUT);}/*Function: Sample for 1000ms and get the maximum value from the SIG pin*/int getMaxValue(){int sensorValue; //value read from the sensorint sensorMax = 0;uint32_t start_time = millis();while((millis()-start_time) sensorMax){/*record the maximum sensor value*/sensorMax = sensorValue;}}return sensorMax;}