SCT-013-030 current monitor sensor



  • Yep, got that lately :)
    Thanks.

    QQ.



  • @fredok

    hi , do you have please updated sketch for newest version of domoticz ? This old cause problems when I compiling it.

    Thanks :+1:


  • Mod



  • @warmaniac
    Sorry i not update this sketch ...



  • @gohan

    tried to modify but I always get error

    /MySensors.h:328:2: error: #error No forward link or gateway feature activated. This means nowhere to send messages! Pretty pointless.

    #error No forward link or gateway feature activated. This means nowhere to send messages! Pretty pointless.

    // EmonLibrary examples openenergymonitor.org, Licence GNU GPL V3  ***/
    #include <SPI.h>
    #include <MySensors.h>  
    #include "EmonLib.h"             // Include Emon Library
    EnergyMonitor emon1;             // Create an instance
    #define CHILD_ID 0 
    #define MY_RADIO_NRF24
    #define PIN_ANALOG_I A1
    
    //MySensor gw;
    unsigned long lastSend;
    unsigned long lastSend2;
    unsigned long SEND_FREQUENCY = 20000; // Minimum time between send (in milliseconds). We don't wnat to spam the gateway.
    unsigned long SEND_FREQUENCY2 = SEND_FREQUENCY / 25;
    int index = 0;
    double Irms=0;
    double power;
    boolean pcReceived = false;
    boolean onyva=true;
    float nrj=0, old_nrj;
    MyMessage IrmsMsg(CHILD_ID,V_WATT);
    MyMessage kWhMsg(CHILD_ID,V_KWH);
    MyMessage pcMsg(CHILD_ID,V_VAR1);
    
    
    //void incomingMessage(const MyMessage &message) 
    
    void receive(const MyMessage &message) 
    {
      if (message.type==V_VAR1) 
      {  
        nrj = old_nrj = message.getFloat();
        Serial.print("Received last nrj count from gw:");
        Serial.println(nrj);
        pcReceived = true;
      }
    }
    
    void presentation () { 
      
      sendSketchInfo("Energy Meter", "1.0");  // Send the sketch version information to the gateway and Controller
      present(CHILD_ID, S_POWER);   // Register this device as power sensor
      request(CHILD_ID, V_VAR1);
     
      }
    
    void setup()
    {  
      begin(incomingMessage);
      emon1.current(PIN_ANALOG_I, 30.0);       // Current: input pin, calibration.
    }
    
    void loop()
    {
      if (onyva) process();
      onyva = false; 
      unsigned long now = millis();
      //unsigned long now2 = millis();
      bool sendTime2 = now - lastSend2 > SEND_FREQUENCY2;
      if (sendTime2) //calcul Irms moy
      {
        if (index==0) Irms=emon1.calcIrms(1480);
        else {
        index++;
        Irms = (index*Irms+emon1.calcIrms(1480))/(index+1);
        }
        lastSend2 = now;
      }
      bool sendTime = now - lastSend > SEND_FREQUENCY;
      if (sendTime && pcReceived) 
      { 
        power = Irms*232.0;
        send(IrmsMsg.set(power,1));
        Serial.println(Irms*232.0);
        nrj += (power*SEND_FREQUENCY/1000)/3.6E6;
        send(kWhMsg.set(nrj,5));
        send(pcMsg.set(nrj,5));
        lastSend = now;
        index = 0;
        old_nrj=nrj;
        onyva=true;
      }
     else if (sendTime && !pcReceived)
     {
      request(CHILD_ID, V_VAR1);
      lastSend=now;
      index=0;
      onyva=true;
     }
    }
    

    It is possible to compile it with old mysensors library ? It will work with gateway which has a newest version ?



  • Hello, at the end i write a v2.0 of the sketch

    //#include <Arduino.h>
    #define MY_DEBUG
    #define MY_RADIO_NRF24
    // EmonLibrary examples openenergymonitor.org, Licence GNU GPL V3  ***/
    #include <SPI.h>
    #include <MySensors.h>
    #include <DallasTemperature.h>
    #include <OneWire.h>
    #include "EmonLib.h"             // Include Emon Library
    EnergyMonitor emon1;             // Create an instance
    EnergyMonitor emon2;
    
    #define CHILD_ID_CLAMP1 0
    #define CHILD_ID_CLAMP2 1
    #define CHILD_ID_TEMP 2
    #define CHILD_ID_LDR 3
    
    #define PIN_ANALOG_I1 A2 //pince amperemetrique1
    #define PIN_ANALOG_I2 A3
    #define PIN_LDR A0 // LDR
    #define PIN_DALLAS 3
    
    //Definition de dallas
    #define MAX_ATTACHED_DS18B20 1
    #define COMPARE_TEMP 1 // Send temperature only if changed? 1 = Yes 0 = No
    OneWire oneWire(PIN_DALLAS);
    DallasTemperature sensors(&oneWire);
    float lastTemperature[MAX_ATTACHED_DS18B20];
    int numSensors = 1;
    bool receivedConfig = false;
    bool metric = true; //truc v2.0
    
    //int compat = 0;
    unsigned long lastSend_temp = millis();
    unsigned long lastSend_power = millis();
    unsigned long lastSend_c;
    unsigned long SEND_FREQUENCY = 120000; // Minimum time between send (in milliseconds). We don't wnat to spam the gateway.
    unsigned long SEND_FREQUENCY_TEMP = 300000; //delais d'emission entre 2 mesures de temps
    unsigned long SEND_FREQUENCY_C = SEND_FREQUENCY / 30;
    int index = 0;
    double Irms1 = 0;
    double Irms2 = 0;
    boolean pcReceived1 = false;
    boolean pcReceived2 = false;
    boolean first_time_temp = HIGH;
    
    float nrj1 = 0, old_nrj1;
    float nrj2 = 0, old_nrj2;
    int ldr = 0, old_ldr;
    
    MyMessage IrmsMsg1(CHILD_ID_CLAMP1, V_WATT);
    MyMessage kWhMsg1(CHILD_ID_CLAMP1, V_KWH);
    MyMessage pcMsg1(CHILD_ID_CLAMP1, V_VAR1);
    MyMessage IrmsMsg2(CHILD_ID_CLAMP2, V_WATT);
    MyMessage kWhMsg2(CHILD_ID_CLAMP2, V_KWH);
    MyMessage pcMsg2(CHILD_ID_CLAMP2, V_VAR2);
    MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
    MyMessage msgLight(CHILD_ID_LDR, V_LIGHT_LEVEL);
    
    void before() {
      sensors.begin();
    }
    
    
    void presentation()
    {
    
      sendSketchInfo("Multisensors_Entree", "2.0");  // Send the sketch version information to the gateway and Controller
      present(CHILD_ID_CLAMP1, S_POWER);   // Register this device as power sensor
      request(CHILD_ID_CLAMP1, V_VAR1);
      present(CHILD_ID_CLAMP2, S_POWER);   // Register this device as power sensor
      request(CHILD_ID_CLAMP2, V_VAR2);
      numSensors = sensors.getDeviceCount(); //compte le nb de ds18
      present(CHILD_ID_TEMP, S_TEMP);
      present(CHILD_ID_LDR, S_LIGHT_LEVEL);
    }
    
    
    void receive(const MyMessage &message)
    {
      if (message.type == V_VAR1)
      {
        nrj1 = old_nrj1 = message.getFloat();
        Serial.print("Received last nrj count from gw:");
        Serial.println(nrj1);
        pcReceived1 = true;
      }
    
      if (message.type == V_VAR2)
      {
        nrj2 = old_nrj2 = message.getFloat();
        Serial.print("Received last nrj count from gw:");
        Serial.println(nrj2);
        pcReceived2 = true;
      }
    
    }
    
    void setup()
    {
      sensors.setWaitForConversion(false);
      emon1.current(PIN_ANALOG_I1, 30.0);       // Current: input pin, calibration.
      emon2.current(PIN_ANALOG_I2, 30.0);
      Serial.println("SETUP completed");
    }
    
    void envoi_donnees(double intrms, int id_clamp)
    {
      Serial.print("Envoi des donnees .... clamp="); Serial.println(id_clamp);
      double energie = (intrms * 232.0 * SEND_FREQUENCY / 1000) / 3.6E6;
      switch (id_clamp)
      {
        case 1:
          {
            send(IrmsMsg1.set(intrms * 232.0, 1));
            nrj1 += energie;
            send(kWhMsg1.set(nrj1, 5));
            send(pcMsg1.set(nrj1, 5));
            old_nrj1 = nrj1;
          }
          break;
        case 2:
          {
            send(IrmsMsg2.set(intrms * 232.0, 1));
            nrj2 += energie;
            send(kWhMsg2.set(nrj2, 5));
            send(pcMsg2.set(nrj2, 5));
            old_nrj2 = nrj2;
          }
          break;
      }
    }
    
    void loop() {
      unsigned long now = millis();
      bool sendTime_c = now - lastSend_c > SEND_FREQUENCY_C;
      // Calcul de Irms1 et Irms2
      if (sendTime_c) //calcul Irms moy clamp1/clamp2
      {
        if (index == 0)
        {
          Irms1 = emon1.calcIrms(1480);
          Irms2 = emon2.calcIrms(1480);
        }
        else  
        {
          Irms1 = (index * Irms1 + emon1.calcIrms(1480)) / (index + 1);
          Irms2 = (index * Irms2 + emon2.calcIrms(1480)) / (index + 1);
        }
        lastSend_c = now;
        index++;
      }
    
      bool sendTime_temp = now - lastSend_temp > SEND_FREQUENCY_TEMP;
      if (sendTime_temp || first_time_temp)
      {
        Serial.println("........ quoiqu'il arrive, on envoi la temp+ldr");
        first_time_temp = LOW;
        //Send Temp
        // Envoi Température d'après https://github.com/mysensors/MySensorsArduinoExamples/blob/master/examples/DallasTemperatureSensor/DallasTemperatureSensor.ino
        sensors.requestTemperatures();
        sleep(750);
        for (int i = 0; i < numSensors && i < MAX_ATTACHED_DS18B20; i++)
          {
         // float temperature = static_cast<float>(static_cast<int>((getConfig().isMetric ? sensors.getTempCByIndex(i) : sensors.getTempFByIndex(i)) * 10.)) / 10.;
          float temperature = static_cast<float>(static_cast<int>((getControllerConfig().isMetric?sensors.getTempCByIndex(i):sensors.getTempFByIndex(i)) * 10.)) / 10.;
          if (lastTemperature[i] != temperature && temperature != -127.00 && temperature != 85.00)
          {
    
            // Send in the new temperature
            send(msgTemp.setSensor(i).set(temperature, 1));
            Serial.println(".....................Envoi Temp");
            // Save new temperatures for next compare
            lastTemperature[i] = temperature;
          }
        }
     
      //Send light LDR
      //Envoi Light LDR
      ldr = (1023 - analogRead(PIN_LDR)) / 10.23;
      if (old_ldr != ldr)
      {
        send(msgLight.set(ldr));
        old_ldr = ldr;
      }
       lastSend_temp=now;
      }
    
    
    
     bool sendTime_power = now - lastSend_power > SEND_FREQUENCY;
    
     if (sendTime_power)
    {
    
      // Envoi ou request Puissance1
      if (pcReceived1) envoi_donnees(Irms1, 1);
      else     {
        request(CHILD_ID_CLAMP1, V_VAR1);
        Serial.println("Request VAR1");
      }
    
    
      // Envoi ou request Puissance2
      if (pcReceived2) envoi_donnees(Irms2, 2);
      else     {
        request(CHILD_ID_CLAMP2, V_VAR2);
        Serial.println("Request VAR2");
      }
      //on reinitialise les compteurs
      lastSend_power = now;
      index = 0;
      }
    }
    
    
    
    
    
    

    attention, i use in the same node a ds18b20 for temp and LRD for light measurment
    so u need to delete part of sketch.
    i just compiling/Verifying this with mysensors v2.1 (but not loaded in arduino pro) and no error
    for emonlib => https://github.com/openenergymonitor/EmonLib



  • .... u must to look the monitor for see "Envoi des données .... clamp=0" and after (a few minutes after) "Envoi des données .... clamp=1"
    Look after ur domotic soft for see if your gw become something.
    0_1490792642229_clamp1.jpg
    0_1490792655751_clamp2.jpg

    bye.



  • @fredok

    nice ! thank you very much for fast solution :) I try it at home , it compiles well :+1:


  • Mod

    @warmaniac you got errors because you need to move the
    "#include <MySensors.h>" after all the "#DEFINE....." otherwise the library does not know how to be configured



  • @fredok

    I modyfied your sketch (deleting unwanted code like dallas and light sensor) it works but i think I done something wrong, because it spams my gateway , now it looks like this

    //#include <Arduino.h>
    #define MY_DEBUG
    #define MY_RADIO_NRF24
    // EmonLibrary examples openenergymonitor.org, Licence GNU GPL V3  ***/
    #include <SPI.h>
    #include <MySensors.h>
    #include <OneWire.h>
    #include "EmonLib.h"             // Include Emon Library
    EnergyMonitor emon1;             // Create an instance
    
    #define CHILD_ID_CLAMP1 0
    #define PIN_ANALOG_I1 A1 //pince amperemetrique1
    
    bool receivedConfig = false;
    bool metric = true; //truc v2.0
    
    //int compat = 0;
    unsigned long lastSend_temp = millis();
    unsigned long lastSend_power = millis();
    unsigned long lastSend_c;
    unsigned long SEND_FREQUENCY = 120000; // Minimum time between send (in milliseconds). We don't wnat to spam the gateway.
    unsigned long SEND_FREQUENCY_C = SEND_FREQUENCY / 30;
    int index = 0;
    double Irms1 = 0;
    boolean pcReceived1 = false;
    
    float nrj1 = 0, old_nrj1;
    
    MyMessage IrmsMsg1(CHILD_ID_CLAMP1, V_WATT);
    MyMessage kWhMsg1(CHILD_ID_CLAMP1, V_KWH);
    MyMessage pcMsg1(CHILD_ID_CLAMP1, V_VAR1);
    
    void presentation()
    {
    
      sendSketchInfo("Multisensors_Entree", "2.0");  // Send the sketch version information to the gateway and Controller
      present(CHILD_ID_CLAMP1, S_POWER);   // Register this device as power sensor
      request(CHILD_ID_CLAMP1, V_VAR1);
    }
    
    
    void receive(const MyMessage &message)
    {
      if (message.type == V_VAR1)
      {
        nrj1 = old_nrj1 = message.getFloat();
        Serial.print("Received last nrj count from gw:");
        Serial.println(nrj1);
        pcReceived1 = true;
      }
    
    }
    
    void setup()
    {
      emon1.current(PIN_ANALOG_I1, 30.0);       // Current: input pin, calibration.
      Serial.println("SETUP completed");
    }
    
    void envoi_donnees(double intrms, int id_clamp)
    {
      Serial.print("Envoi des donnees .... clamp="); Serial.println(id_clamp);
      double energie = (intrms * 232.0 * SEND_FREQUENCY / 1000) / 3.6E6;
      switch (id_clamp)
      {
        case 1:
          {
            send(IrmsMsg1.set(intrms * 232.0, 1));
            nrj1 += energie;
            send(kWhMsg1.set(nrj1, 5));
            send(pcMsg1.set(nrj1, 5));
            old_nrj1 = nrj1;
          }
          break;
      }
    }
    
    void loop() {
      unsigned long now = millis();
      bool sendTime_c = now - lastSend_c > SEND_FREQUENCY_C;
      // Calcul de Irms1 et Irms2
      if (sendTime_c) //calcul Irms moy clamp1/clamp2
      {
        if (index == 0)
        {
          Irms1 = emon1.calcIrms(1480);
        }
        else  
        {
          Irms1 = (index * Irms1 + emon1.calcIrms(1480)) / (index + 1);
        }
        lastSend_c = now;
        index++;
      }
    
    bool sendTime_power = now - lastSend_power > SEND_FREQUENCY;
    
     if (sendTime_power)
    {
    
      // Envoi ou request Puissance1
      if (pcReceived1) envoi_donnees(Irms1, 1);
      else     {
        request(CHILD_ID_CLAMP1, V_VAR1);
        Serial.println("Request VAR1");
      }
    
      }
    }
    

    and I get this results now

    1_1490873287086_zaznam.png 0_1490873287086_meter.png



  • hello, i see the sketch send everyloop ???
    try this

    #define MY_DEBUG
    #define MY_RADIO_NRF24
    // EmonLibrary examples openenergymonitor.org, Licence GNU GPL V3  ***/
    #include <SPI.h>
    #include <MySensors.h>
    #include "EmonLib.h"             // Include Emon Library
    EnergyMonitor emon1;             // Create an instance
    
    #define CHILD_ID_CLAMP1 0
    #define PIN_ANALOG_I1 A2 //pince amperemetrique1
    
    unsigned long lastSend_power = millis();
    unsigned long lastSend_c = millis();
    unsigned long SEND_FREQUENCY = 120000; // Minimum time between send (in milliseconds). We don't wnat to spam the gateway.
    unsigned long SEND_FREQUENCY_C = SEND_FREQUENCY / 30;
    int index = 0;
    double Irms1 = 0;
    boolean pcReceived1 = false;
    float nrj1 = 0, old_nrj1;
    
    MyMessage IrmsMsg1(CHILD_ID_CLAMP1, V_WATT);
    MyMessage kWhMsg1(CHILD_ID_CLAMP1, V_KWH);
    MyMessage pcMsg1(CHILD_ID_CLAMP1, V_VAR1);
    
    void before() {
    
    }
    
    
    void presentation()
    {
      sendSketchInfo("Multisensors_Entree", "2.0");  // Send the sketch version information to the gateway and Controller
      present(CHILD_ID_CLAMP1, S_POWER);   // Register this device as power sensor
      request(CHILD_ID_CLAMP1, V_VAR1);
    }
    
    
    void receive(const MyMessage &message)
    {
      if (message.type == V_VAR1)
      {
        nrj1 = old_nrj1 = message.getFloat();
        Serial.print("Received last nrj count from gw:");
        Serial.println(nrj1);
        pcReceived1 = true;
      }
    }
    
    void setup()
    {
      emon1.current(PIN_ANALOG_I1, 30.0);       // Current: input pin, calibration.
      Serial.println("SETUP completed");
    }
    
    void envoi_donnees(double intrms, int id_clamp)
    {
      Serial.print("Envoi des donnees .... clamp="); Serial.println(id_clamp);
      double energie = (intrms * 232.0 * SEND_FREQUENCY / 1000) / 3.6E6;
      switch (id_clamp) //can be modified ...
      {
        case 1:
          {
            send(IrmsMsg1.set(intrms * 232.0, 1));
            nrj1 += energie;
            send(kWhMsg1.set(nrj1, 5));
            send(pcMsg1.set(nrj1, 5));
            old_nrj1 = nrj1;
          }
          break;
      }
    }
    
    void loop() {
      unsigned long now = millis();
      bool sendTime_c = now - lastSend_c > SEND_FREQUENCY_C;
      // Calcul de Irms1 et Irms2
      if (sendTime_c) //calcul Irms moy clamp1/clamp2
      {
        if (index == 0)
        {
          Irms1 = emon1.calcIrms(1480);
        }
        else  
        {
          Irms1 = (index * Irms1 + emon1.calcIrms(1480)) / (index + 1);
        }
        lastSend_c = now;
        index++;
      }
    
    bool sendTime_power = now - lastSend_power > SEND_FREQUENCY;
    
     if (sendTime_power)
    {
    
      // Envoi ou request Puissance1
      if (pcReceived1) envoi_donnees(Irms1, 1);
      else     {
        request(CHILD_ID_CLAMP1, V_VAR1);
        Serial.println("Request VAR1");
      }
      //on reinitialise les compteurs
      lastSend_power = now;
      index = 0;
      }
    }
    

    if problem copy the screen of monitor.thx



  • ahoj, if not working i will try with a new arduino for test the code.
    dobrý večer



  • @fredok

    sketch works better now , not spamming

    0_1490898851738_upload-e9fbdb1a-1c4f-4356-826f-4e9112a25036

    0_1490898895065_upload-f9c9fbff-f6e5-48ee-96de-8bf28054b129

    but I dont understand current values

    0_1490898965008_upload-d6846108-30b7-4a7d-ad02-c0b0897b20fd



  • its seem good kWh every 2min
    1864W is the power value

    send(IrmsMsg1.set(intrms * 232.0, 1));
    

    the sketch send power value P (in W) and energy (in kWh) calculated over 2min.

    double energie = (intrms * 232.0 * SEND_FREQUENCY / 1000) / 3.6E6;
    
    // and after
    nrj1 += energie;
    send(kWhMsg1.set(nrj1, 5));
    

    in domoticz i have one "dispositif" included instant power Watt and day cumulate energy kWh
    bye



  • @fredok

    Thank you very much! Only one question left, with multimeter I measured my voltage 241.0 V could I update it in sketch or ?



  • a clamp measure only intensity I (in A) and Power =UrmsxIrms so if in u home Urms=241V u can change with this value but the power measurment not consider cosphy
    by example the power measurment of my fridge =257W but true value is (with cosphy) 257x0,56=....W
    so if u change 232V with 241V why not but at the end its will continu to be a approximate of the true power.
    bye



  • @fredok

    Okay :) understand now, and what about calibration for wiring I followig this site

    https://learn.openenergymonitor.org/electricity-monitoring/ct-sensors/how-to-build-an-arduino-energy-monitor-measuring-current-only?redirected=true

    And they calibrate

     emon1.current(1, 111.1); 
    

    And yours calibration

      emon1.current(PIN_ANALOG_I1, 30.0);
    

    Is some difference after this calibrations in measuring ?


  • Mod

    They also have the same sensor with also voltage measurement for a more accurate reading



  • @gohan

    Because with test sketch from that site I get actual consumption 0,5 kWh but from mysensors sketch I get much higher values look

    0_1490962213606_upload-ed834413-8133-438b-8e2a-95c017b3f33c

    1,7 kWh per one hour is too much , I had only TV and fridge in power on mode, I had total consumption per last year about 2140 kWh , which is about 6 kWh per day.



  • hello,

    1. the constant 30 is the divide between ratio/burden resistor including inside the clamp
      for me ration=1800 and R=62ohm (1800/62 approx 30)
      http://www.planete-domotique.com/notices/S/C/SCT013-030V.pdf
    2. i can see 1677 Wh=1,677 kWh ... but 1900W for only TV+fridge its many
      mine clamp2 log in domoticz
      0_1490978374266_grphclamp2.jpg
    3. Maybe it can help u??? i have a pulse powercounter count every flash (1 Wh of energy) of mine electric box and the power (Watt) send to gw is wrong in domoticz but the energy counting (kWh) is great.
      0_1490978648613_grphclamp2.jpg
      Where come the wrong of fake power (GW ? sketch ? domoticz , i dont know)
      bye

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