//Measuring Current Using ACS712

const int analogIn = A0; //Connect current sensor with A0 of Arduino
int mVperAmp = 185; // use 100 for 20A Module and 66 for 30A Module
int RawValue= 0;
int ACSoffset = 2500; 
double Voltage = 0; //voltage measuring
double Amps = 0;// Current measuring

void setup() {
  //baud rate
  Serial.begin(9600);//baud rate at which arduino communicates with Laptop/PC
  delay(2000);//delay for 2 sec
}

float valeurACS712( int pin )
{
  int valeur;
  float moyenne = 0;
  int nbr_lectures = 50;
 
  for( int i = 0; i < nbr_lectures; i++ )
  {
      valeur = analogRead( pin );
      moyenne = moyenne + float(valeur);
      delay(10);
  }
  moyenne = moyenne / float(nbr_lectures);
  return moyenne -235;
}

void loop() //method to run the source code repeatedly
{
 
 RawValue = valeurACS712(analogIn);//reading the value from the analog pin
 Voltage = (RawValue / 1024.0) * 5000; // Gets you mV
 Amps = ((Voltage - ACSoffset) / mVperAmp);
 
//Prints on the serial port
 Serial.print("Raw Value = " ); // prints on the serial monitor
 Serial.print(RawValue); //prints the results on the serial monitor
 

 Serial.print("\t mV = "); // shows the voltage measured 
 Serial.print(Voltage,3); // the '3' after voltage allows you to display 3 digits after decimal point
 
 Serial.print("\t Amps = "); // shows the voltage measured 
 Serial.println(Amps,3);// the '3' after voltage allows you to display 3 digits after decimal point
 
 delay(2500); 
}