Current example

The current sensor device has to be connected to the sensor module. Current sensor device has a 3,5 mm plug what has to be connected to the sensor module left jacket A. The controller and sensor modules must be connected.

Needed libraries:

lib_deps = ITTIoT, EmonLib

The example code above shows the alternating current value to current topic “curr”. If nothing is measured the current value is NaN.

#include <Arduino.h>
#include <ittiot.h>
#include "EmonLib.h"
#include <Ticker.h>
#define ADC_PIN A0
EnergyMonitor emon1;
Ticker adcTicker;
bool adcFlag;
uint16_t adcSampleCount;
void setAdcFlag()
void iot_connected()
    Serial.println("MQTT connected callback");
    iot.log("IoT current example!");
void setup()
    iot.printConfig(); // print json config to serial
    emon1.current(ADC_PIN, iot.cfg->get<double>("stc"));             // Current: input pin, calibration.
    adcSampleCount = iot.cfg->get<uint16_t>("samples");
    adcTicker.attach(0.5, setAdcFlag);
void loop()
      adcFlag = false;
      double val = emon1.calcIrms(adcSampleCount);
      String msg = String(val);
      iot.publishMsg("curr", msg.c_str());
en/iot/examples/current.txt · Last modified: 2018/02/27 16:10 by Somepub Valid CSS Driven by DokuWiki do yourself a favour and use a real browser - get firefox!! Recent changes RSS feed Valid XHTML 1.0