Problema con traducir los valores de voltaje del sensor ZMPT101B

International Español Hardware
4

Prueba con Emonlib a ver si resuelve tu problema

// EmonLibrary examples openenergymonitor.org, Licence GNU GPL V3

#include "EmonLib.h"             // Include Emon Library

EnergyMonitor emon1;             // Create an instance

void setup()
{  
  Serial.begin(9600);
  
  emon1.voltage(2, 234.26, 1.7);  // Voltage: input pin, calibration, phase_shift
}

void loop() {
  emon1.calcVI(20,2000);         // Calculate all. No.of half wavelengths (crossings), time-out
  emon1.serialprint();           // Print out all variables (realpower, apparent power, Vrms, Irms, power factor) 

  float supplyVoltage   = emon1.Vrms;             //extract Vrms into Variable

}