Corymacs
Published

Whole House energy monitor

Whole house energy monitor that monitors a split phase 120/240 service and publishes to blynk.

IntermediateFull instructions provided53
Whole House energy monitor

Things used in this project

Hardware components

Arduino UNO
Arduino UNO
×1
100 Amp current transformer
×1
Arduino uno ethernet shield
×1
Resistor 10k ohm
Resistor 10k ohm
×2
Capacitor 10 µF
Capacitor 10 µF
×1
Project Box
×1
3.5mm female headphone jacks
×1
My custom shield for CT hookup
×1

Software apps and online services

Blynk
Blynk

Hand tools and fabrication machines

Soldering iron (generic)
Soldering iron (generic)
Solder Wire, Lead Free
Solder Wire, Lead Free
Drill / Driver, Cordless
Drill / Driver, Cordless
Plier, Side Cutting
Plier, Side Cutting

Story

Read more

Schematics

schematic_uno_energy_monitor_2021-11-21_WrFuMp9doE.png

Code

Sketch

Arduino
Arduino Energy Monitor Code
#include <SPI.h>
#include <Ethernet.h>
#include <BlynkSimpleEthernet.h>
#include <TimeLib.h>
#include <WidgetRTC.h>
char auth[] = "your blynk token here"; // Put the token from your blynk project here
double calibration = 0.32; // Modify this to calibrate your sensor o.32 should be accurent for a 100 amp CT
double kilos0;
double kilos1;
double peakkilos;
unsigned long startMillis;
unsigned long endMillis;
double RMSCurrent0;
double RMSCurrent1;
int RMSPower0;
int RMSPower1;
int peakPower0;
int peakPower1;
int TotalRMSPower;
int current0 = 0;
int maxCurrent0 = 0;
int minCurrent0 = 1000;
int current1 = 0;
int maxCurrent1 = 0;
int minCurrent1 = 1000;
int zero0 = 516;
int zero1 = 516;
int Volts = 121.2; // Change this field to the voltage your house is supplied with
BlynkTimer timer;
WidgetRTC rtc;

void setup()
{
  Serial.begin(115200);
  Blynk.begin(auth, IPAddress(***, ***, ***, ***), 8080); //Replace the astrics with the IP address of your local blynk server
  setSyncInterval(10 * 60);
}

void loop()
{
  if (Blynk.connected()) {  // If connected run as normal
    Blynk.run();
    rtc.begin();
    timer.run();
  } else {
    Blynk.connect();
  }
  readPhase();
  displayKilowattHours();
  displayCurrent();
  displayPower();
  if (hour() == 23 && minute() == 59) {
    kilos0 = 0;
    kilos1 = 0;
  }
  delay(100);
  readPhase();
  delay(100);
  readPhase();
}

void clockDisplay()
{
  String currentTime = String(hour()) + ":" + minute() + ":" + second();
  String currentDate = String(day()) + " " + month() + " " + year();
  Serial.print("Current time: ");
  Serial.println(currentTime);
}

void readPhase ()
{
  maxCurrent0 = zero0;
  minCurrent0 = zero0;
  maxCurrent1 = zero1;
  minCurrent1 = zero1;
  for (int i = 0 ; i <= 200 ; i++)
  {
    current0 =  analogRead(A0);
    current1 =  analogRead(A1);
    if (current0 >= maxCurrent0)
      maxCurrent0 = current0;
    else if (current0 <= minCurrent0)
      minCurrent0 = current0;
    if (current1 >= maxCurrent1)
      maxCurrent1 = current1;
    else if (current1 <= minCurrent1)
      minCurrent1 = current1;
  }
  zero0 = ((maxCurrent0 - minCurrent0) / 2) + minCurrent0;
  zero1 = ((maxCurrent1 - minCurrent1) / 2) + minCurrent1;
  RMSCurrent0 = (maxCurrent0 - zero0) * calibration;
  RMSCurrent1 = (maxCurrent1 - zero1) * calibration;
  RMSPower0 = Volts * RMSCurrent0;
  RMSPower1 = Volts * RMSCurrent1;
  TotalRMSPower = RMSPower0 + RMSPower1;
  endMillis = millis();
  unsigned long time = (endMillis - startMillis);
  kilos0 = kilos0 + (((double)RMSPower0 / 1000) * ((double)time / 3600000));
  kilos1 = kilos1 + (((double)RMSPower1 / 1000) * ((double)time / 3600000));
  peakkilos = kilos0 + kilos1;
  startMillis = millis();
}

void displayKilowattHours()  //Displays all kilowatt hours data
{
  Serial.print(kilos0);
  Serial.print("kWh          ");
  Serial.print(kilos1);
  Serial.println("kWh");
  Serial.print(peakkilos);
  Serial.println("kWh");
  Blynk.virtualWrite(V2, peakkilos);
}

void displayCurrent()      //Displays all current data
{
  Serial.print(RMSCurrent0);
  Serial.print("A          ");
  Serial.print(RMSCurrent1);
  Serial.println("A");
  Blynk.virtualWrite(V0, RMSCurrent0);
  Blynk.virtualWrite(V1, RMSCurrent1);
}

void displayPower()      //Displays all watts
{
  Serial.print(RMSPower0);
  Serial.print("W          ");
  Serial.print(RMSPower1);
  Serial.print("W          ");
  Serial.print(TotalRMSPower);
  Serial.println("W");
}

Credits

Corymacs

Corymacs

0 projects • 0 followers

Comments

Add projectSign up / Login