Tes Koding NodeMCU PZEM0004Tv30.ino

#include <PZEM004Tv30.h>
PZEM004Tv30 pzem(D3, D4);

void setup() {
  Serial.begin(115200);
}

void loop() {
  float voltage = pzem.voltage();
  if ( !isnan(voltage) ) {
    Serial.print("Voltage: "); Serial.print(voltage); Serial.println("V");
  } else {
    Serial.println("Error reading voltage");
  }
  float current = pzem.current();
  if ( !isnan(current) ) {
    Serial.print("Current: "); Serial.print(current); Serial.println("A");
  } else {
    Serial.println("Error reading current");
  }
  float power = pzem.power();
  if ( !isnan(power) ) {
    Serial.print("Power: "); Serial.print(power); Serial.println("W");
  } else {
    Serial.println("Error reading power");
  }
  float energy = pzem.energy();
  if ( !isnan(energy) ) {
    Serial.print("Energy: "); Serial.print(energy); Serial.println("kWh");
  } else {
    Serial.println("Error reading energy");
  }
  float frequency = pzem.frequency();
  if ( !isnan(frequency) ) {
    Serial.print("Frequency: "); Serial.print(frequency, 1); Serial.println("Hz");
  } else {
    Serial.println("Error reading frequency");
  }
  float pf = pzem.pf();
  if ( !isnan(pf) ) {
    Serial.print("PF: "); Serial.println(pf);
  } else {
    Serial.println("Error reading power factor");
  }
  Serial.println();
  delay(2000);
}

link ini jangan dihapus ya mas, ini sangat bermanfaat. terima kasih