ACS712 Current Sensor 20A Current Sensor Arus for Arduino

ACS712-20A //Mengukur arus pada tegangan AC 220V dengan ACS712 //Analog Output ACS712 pada PIN A0 const int sensorIn = A0; int mVperAmp = 100; // use 185 for ACS712 5A // use 100 for ACS712 20A // use 66 for ACS712 30A double Voltage = 0; double VRMS = 0; double AmpsRMS = 0; void setup(){ Serial.begin(9600); } void loop(){ Voltage = getVPP(); VRMS = (Voltage/2.0) *0.707; AmpsRMS = (VRMS * 1000)/mVperAmp; Serial.print(AmpsRMS); Serial.println( #34; Amps RMS #34;); } float getVPP() { float result; int readValue; //value read from the sensor int maxValue = 0; // store max value here int minValue = 1024; // store min value here uint32_t start_time = millis(); while((millis()-start_time) lt; 1000) //sample for 1 Sec { readValue = analogRead(sensorIn); // see if you have a new maxValue if (readValue gt; maxValue) { /*record the maximum sensor value*/ maxValue = readValue; } if (readValue lt; minValue) { /*record the maximum sensor value*/ minValue = readValue; } } // Subtract min from max result = ((maxValue - minValue) * 5.0)/1024.0; return result; }