reporting battery to domoticZ

fhenryco

@fhenryco apparantly something like send(msgTemp.setSensor(CHILD_ID_TEMP).set(temperature,1));
send(msgHum.setSensor(CHILD_ID_HUM).set(humidity,1));
should do the job ! going to try that
but i'm surprised this is not done by default since msgHum and msgTemp are defined separately for each sensor Id

fhenryco

@fhenryco it did nothing different ... still have a single sensor temp+hum don't understand why ...

sundberg84

@fhenryco - Yes, and there is a trick to seperate them... and i if I remembe right @AWI is the one to ask.

Edit, found his post here: https://forum.mysensors.org/topic/5132/ds18b20-ans-sht31-d-show-up-as-combined-sensors-on-domoticz/13

fhenryco

using V_text and S_info is a workaround to avoid grouping

Rene046

i would like to ask something to ,

Now i have the battery level showing up in Domoticz what can i do to log the voltage in volts, should i add something inside the sketch or something in domoticz..

fhenryco

@Rene046
This is the instruction in your sketch which allows to see the battery level of devices in domoticZ
sendBatteryLevel(batteryPcnt);
But as you noticed , this is not reported in the logs. One possibility to see it in the Log is to as well send this batteryPcnt information with a send(msgbatt.set(batteryPcnt ,1);
provided you have defined
MyMessage msgbatt(CHILD_ID_BATT, V_TEXT);

In other words you send the battery info as if it was the info of an additional sensor sending text type info
which you also need to present in the presentation void with

present(CHILD_ID_BATT, S_INFO);
For instance if you already have two sensors in you sketch let's say temp and hum with ID =0 and 1 respectively you would give the battery level the next unused ID
CHILD_ID_BATT=2
There might be a simpler and more natural way but i don't know it .

AWI

@Rene046 The "royal" way to report battery level is to define it as S_MULTIMETER and use it to report voltage. Domoticz will take the voltage and can graph it. i.e.

definitions: MyMessage voltageMsg(VOLTAGE_CHILD_ID, V_VOLTAGE);
in presentation: present(VOLTAGE_CHILD_ID, S_MULTIMETER, "Battery level" );
sending: send(voltageMsg.set(lastVoltage,2)); //send battery in Volt 2 decimal places

Rene046

@ fhenryco

Cant get it to work, if you have time could help with my sketch.

// Enable debug prints to serial monitor
#define MY_DEBUG 

// Enable and select radio type attached
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69


#include <SPI.h>
#include <MySensors.h>
#include <DHT.h>   



// Enable debug prints
#define MY_DEBUG

#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 1
#define HUMIDITY_SENSOR_DIGITAL_PIN 3
#define CHILD_ID_BATTERY 4
unsigned long SLEEP_TIME = 60000; // Sleep time between reads (in milliseconds)

#define SKETCH_NAME "Temp_Hum_Batt"        // Change to a fancy name you like
#define SKETCH_VERSION "2.1"                    // Your version

DHT dht;
float lastTemp;
float lastHum;
boolean metric = true; 
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage msgbatt(CHILD_ID_BATTERY, V_VOLTAGE);
//MyMessage msgbatt(CHILD_ID_BATTERY, V_TEXT);

//=========================
// BATTERY VOLTAGE DIVIDER SETUP
// 1M, 470K divider across battery and using internal ADC ref of 1.1V
// Sense point is bypassed with 0.1 uF cap to reduce noise at that point
// ((1e6+470e3)/470e3)*1.1 = Vmax = 3.44 Volts
// 3.44/1023 = Volts per bit = 0.003363075
#define VBAT_PER_BITS 0.0041055718475073313782991202346  
#define VMIN 3.6                                  //  Vmin (radio Min Volt)=1.9V (564v)
#define VMAX 4.2                                  //  Vmax = (2xAA bat)=3.0V (892v)
int batteryPcnt = 0;                              // Calc value for battery %
int batLoop = 0;                                  // Loop to help calc average
int batArray[3];                                  // Array to store value for average calc.
int BATTERY_SENSE_PIN = A0;                       // select the input pin for the battery sense point
//=========================

void setup()  
{ 
 analogReference(INTERNAL);             // For battery sensing

  delay(500); // Allow time for radio if power used as reset
  
  dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN); 

  metric = getControllerConfig().isMetric;
}

void presentation()  
{ 
  // Send the Sketch Version Information to the Gateway
 // Send the Sketch Version Information to the Gateway
  sendSketchInfo(SKETCH_NAME, SKETCH_VERSION);

  // Register all sensors to gw (they will be created as child devices)
  
  
  present(CHILD_ID_BATTERY, S_INFO);
  //present(CHILD_ID_BATTERY, S_CUSTOM);
  present(CHILD_ID_HUM, S_HUM);
  present(CHILD_ID_TEMP, S_TEMP);
}

void loop()      
{  
  delay(500); // Allow time for radio if power used as reset
  delay(dht.getMinimumSamplingPeriod());
 
  // Fetch temperatures from DHT sensor
  float temperature = dht.getTemperature();
  if (isnan(temperature)) {
      Serial.println("Failed reading temperature from DHT");
  } else if (temperature != lastTemp) {
    lastTemp = temperature;
    if (!metric) {
      temperature = dht.toFahrenheit(temperature);
    }
    send(msgTemp.set(temperature, 1));
    Serial.print("T: ");
    Serial.println(temperature);
  }
  
  // Fetch humidity from DHT sensor
  float humidity = dht.getHumidity();
  if (isnan(humidity)) {
      Serial.println("Failed reading humidity from DHT");
  } else if (humidity != lastHum) {
      lastHum = humidity;
      send(msgHum.set(humidity, 1));
      Serial.print("H: ");
      Serial.println(humidity);
  }
  batM();
  sleep(SLEEP_TIME); //sleep a bit
}

void batM() //The battery calculations
{
   delay(500);
   // Battery monitoring reading
   int sensorValue = analogRead(BATTERY_SENSE_PIN);    
   delay(500);
   
   // Calculate the battery in %
   float Vbat  = sensorValue * VBAT_PER_BITS;
   int batteryPcnt = static_cast<int>(((Vbat-VMIN)/(VMAX-VMIN))*100.);
   Serial.print("Battery percent: "); Serial.print(batteryPcnt); Serial.println(" %");  
   
   // Add it to array so we get an average of 3 (3x20min)
   batArray[batLoop] = batteryPcnt;
  
   if (batLoop > 2) {  
     batteryPcnt = (batArray[0] + batArray[1] + batArray[2] + batArray[3]);
     batteryPcnt = batteryPcnt / 3;
 
   if (batteryPcnt > 100) {
     batteryPcnt=100;
 }
 
     Serial.print("Battery Average (Send): "); Serial.print(batteryPcnt); Serial.println(" %");
       sendBatteryLevel(batteryPcnt);
       msgbatt.set(batteryPcnt ,1);
       batLoop = 0;
      }
     else 
     {
     batLoop++;
     }
}```

My sketch is not working 100% my voltage is not precise, giving me even 221 in percentage while  lipo is at this moment 3.7 volt (simulated with a variable power supply)

im running it on a nano on 1 lipo cell and a dc dc powerup to 5 volt measuring the lipo voltage with a  divider 1M/470K
.
Hope to add a soil moisture sensor and baro sensor in future.

p.s. any one with some better idea sketch its ver welcome. im just started to experiment with Mysensor

Rene046

O i forget to tell im running the latest gateway from Mysensor.

fhenryco

@Rene046
not
msgbatt.set(batteryPcnt ,1);
but
send(msgbatt.set(batteryPcnt ,1));

also may be better to use S_MULTIMETER and V_VOLTAGE (rather than S_INFO and V_TEXT) as adviced by AWI and also 2 decimals hence
send(msgbatt.set(batteryPcnt ,2));

Rene046

thx i got a voltage log only giving me now -44.000 volt and 212 prct at battery level while measuring 3.7 volt battery and voltage on A0 1.3 volts
.

// Enable debug prints to serial monitor
#define MY_DEBUG 

// Enable and select radio type attached
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69

#include <SPI.h>
#include <MySensors.h>
#include <DHT.h>   

// Enable debug prints
#define MY_DEBUG

#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 1
#define HUMIDITY_SENSOR_DIGITAL_PIN 3
#define CHILD_ID_BATTERY 4
unsigned long SLEEP_TIME = 60000; // Sleep time between reads (in milliseconds)

#define SKETCH_NAME "Temp_Hum_Batt"        // Change to a fancy name you like
#define SKETCH_VERSION "2.1"                    // Your version

DHT dht;
float lastTemp;
float lastHum;
boolean metric = true; 
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage msgbatt(CHILD_ID_BATTERY, V_VOLTAGE);

//=========================
// BATTERY VOLTAGE DIVIDER SETUP
// 1M, 470K divider across battery and using internal ADC ref of 1.1V
// Sense point is bypassed with 0.1 uF cap to reduce noise at that point
// ((1e6+470e3)/470e3)*1.1 = Vmax = 3.44 Volts
// 3.44/1023 = Volts per bit = 0.003363075
#define VBAT_PER_BITS 0.0041055718475073313782991202346  // 4.20/1023 volt
#define VMIN 3.6                                  //  Vmin = 3.6 lipo empty
#define VMAX 4.2                                  //  Vmax = 4.2 volt lipo full
int batteryPcnt = 0;                              // Calc value for battery %
int batLoop = 0;                                  // Loop to help calc average
int batArray[3];                                  // Array to store value for average calc.
int BATTERY_SENSE_PIN = A0;                       // select the input pin for the battery sense point
//=========================

void setup()  
{ 
 analogReference(INTERNAL);             // For battery sensing

  delay(500); // Allow time for radio if power used as reset
  
  dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN); 

  metric = getControllerConfig().isMetric;
}

void presentation()  
{ 
  // Send the Sketch Version Information to the Gateway
 // Send the Sketch Version Information to the Gateway
  sendSketchInfo(SKETCH_NAME, SKETCH_VERSION);

  // Register all sensors to gw (they will be created as child devices)
  
  
  present(CHILD_ID_BATTERY, S_MULTIMETER);
  present(CHILD_ID_HUM, S_HUM);
  present(CHILD_ID_TEMP, S_TEMP);
}

void loop()      
{  
  delay(500); // Allow time for radio if power used as reset
  delay(dht.getMinimumSamplingPeriod());
 
  // Fetch temperatures from DHT sensor
  float temperature = dht.getTemperature();
  if (isnan(temperature)) {
      Serial.println("Failed reading temperature from DHT");
  } else if (temperature != lastTemp) {
    lastTemp = temperature;
    if (!metric) {
      temperature = dht.toFahrenheit(temperature);
    }
    send(msgTemp.set(temperature, 1));
    Serial.print("T: ");
    Serial.println(temperature);
  }
  
  // Fetch humidity from DHT sensor
  float humidity = dht.getHumidity();
  if (isnan(humidity)) {
      Serial.println("Failed reading humidity from DHT");
  } else if (humidity != lastHum) {
      lastHum = humidity;
      send(msgHum.set(humidity, 1));
      Serial.print("H: ");
      Serial.println(humidity);
  }
  batM();
  sleep(SLEEP_TIME); //sleep a bit
}

void batM() //The battery calculations
{
   delay(500);
   // Battery monitoring reading
   int sensorValue = analogRead(BATTERY_SENSE_PIN);    
   delay(500);
   
   // Calculate the battery in %
   float Vbat  = sensorValue * VBAT_PER_BITS;
   int batteryPcnt = static_cast<int>(((Vbat-VMIN)/(VMAX-VMIN))*100.);
   Serial.print("Battery percent: "); Serial.print(batteryPcnt); Serial.println(" %");  
   
   // Add it to array so we get an average of 3 (3x20min)
   batArray[batLoop] = batteryPcnt;
  
   if (batLoop > 2) {  
     batteryPcnt = (batArray[0] + batArray[1] + batArray[2] + batArray[3]);
     batteryPcnt = batteryPcnt / 3;
 
   if (batteryPcnt > 100) {
     batteryPcnt=100;
 }
 
     Serial.print("Battery Average (Send): "); Serial.print(batteryPcnt); Serial.println(" %");
       sendBatteryLevel(batteryPcnt);
       send(msgbatt.set(batteryPcnt ,2));
       batLoop = 0;
      }
     else 
     {
     batLoop++;
     }
}```

Rene046

And my serial monitor is going wild .lol
.

41815 MCO:SLP:WUP=-1
Battery percent: 95 %
Battery Average (Send): -12 %
45359 !TSF:MSG:SEND,2-2-0-0,s=255,c=3,t=0,pt=1,l=1,sg=0,ft=0,st=NACK:244
45403 !TSF:MSG:SEND,2-2-0-0,s=4,c=1,t=38,pt=7,l=5,sg=0,ft=1,st=NACK:-12.00
45410 MCO:SLP:MS=60000,SMS=0,I1=255,M1=255,I2=255,M2=255
45415 MCO:SLP:TPD
45417 MCO:SLP:WUP=-1
47962 !TSF:MSG:SEND,2-2-0-0,s=1,c=1,t=0,pt=7,l=5,sg=0,ft=2,st=NACK:20.0
T: 20.00
48007 !TSF:MSG:SEND,2-2-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=3,st=NACK:49.6
H: 49.60
Battery percent: -49 %
49014 MCO:SLP:MS=60000,SMS=0,I1=255,M1=255,I2=255,M2=255
49020 MCO:SLP:TPD
49022 MCO:SLP:WUP=-1
51567 !TSF:MSG:SEND,2-2-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=4,st=NACK:49.2
H: 49.20
Battery percent: -26 %
52575 MCO:SLP:MS=60000,SMS=0,I1=255,M1=255,I2=255,M2=255
52582 MCO:SLP:TPD

Rene046

And it seems like instead of real voltage i seen percentage in the log

AWI

@Rene046 if you send V_VOLTAGE you should use the voltage level not the percentage.

Rene046

@AWI

hi could you explain how..

Rene046

I still cant get it to work, No voltage reading or logging.
I there nobody trying to build a equal sensor.

maybe someone who could rework my sketch. or having a working sketch where i could delete some sensors from.

kind regards and greetings from the Netherlands.

AWI

@Rene046 I would be happy to help you but need some information on your circuit:

How are you powering your Arduino? Through an (onboard) regulator or directly from battery?
The internal reference can only be used up to 1.1V, you seem to be having a voltage divider which has a resulting voltage of > 1.1 V ?
I do not understand your averaging algorithm, why are you not taking an average of the latest x readings?

My suggestion would be to use a different external reference (output of the dc-dc boost converter/ Vcc?) to measure the voltage.

Rene046

Hi Awi

Thanks that you want to help,
Im powering it by a lipo battery 1 cell using an dc-dc boost converter to get 5 volts
i would like to see what this lipo is doing during a day. this lipo will be charged by an solar panel 6 volt 300ma still waiting for that panel.

You are absolutely right with my voltage divider it's at 1.9 volt while lipo is at 4.2 volt
I'm not a hero in elektronics , just starting to play with it. so to start i should make an voltage divider that gives me aprox 1,1 volt max at 4,2 volt.
I changed the voltages divider now from 270k-100k
giving me 1.07 volt at 4.2 volt lipo

i'm totally open for any other design you could give, i just used some code from others that was excepted by demoticz.

If you like you could send me an sample how you would do it or change my sketch ..
today i also received my BMP180 and BH1750 i want to include in the future..

Rene046

my serial monitor is now making a bit more cense voltage is about 0,10 volt off
but maybe i do something wrong with calculation.
percentage is still something wrong with

by the way i'm not shure with the low voltage of an 16850 lipo at 3.6 volt ...

20412 MCO:SLP:WUP=-1
22921 TSF:MSG:SEND,2-2-0-0,s=1,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:17.8
T: 17.80
22929 TSF:MSG:SEND,2-2-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:35.4
H: 35.40
23939 TSF:MSG:SEND,2-2-0-0,s=4,c=1,t=38,pt=7,l=5,sg=0,ft=0,st=OK:3.53
Battery voltage: 3.53 V
Battery percent: -10 %
23946 MCO:SLP:MS=60000,SMS=0,I1=255,M1=255,I2=255,M2=255
23954 MCO:SLP:TPD
23955 MCO:SLP:WUP=-1
26465 TSF:MSG:SEND,2-2-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:36.1
H: 36.10
27473 TSF:MSG:SEND,2-2-0-0,s=4,c=1,t=38,pt=7,l=5,sg=0,ft=0,st=OK:3.52
Battery voltage: 3.52 V
Battery percent: -12 %
27481 MCO:SLP:MS=60000,SMS=0,I1=255,M1=255,I2=255,M2=255
27489 MCO:SLP:TPD

and here the latest sketch

// Enable debug prints to serial monitor
#define MY_DEBUG 

// Enable and select radio type attached
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69

#include <SPI.h>
#include <MySensors.h>
#include <DHT.h>   

// Enable debug prints
#define MY_DEBUG

#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 1
#define HUMIDITY_SENSOR_DIGITAL_PIN 3
#define CHILD_ID_BATTERY 4
unsigned long SLEEP_TIME = 60000; // Sleep time between reads (in milliseconds)

#define SKETCH_NAME "Temp_Hum_Batt"        // Change to a fancy name you like
#define SKETCH_VERSION "2.1"                    // Your version

DHT dht;
float lastTemp;
float lastHum;
boolean metric = true; 
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage msgbatt(CHILD_ID_BATTERY, V_VOLTAGE);

//=========================
// BATTERY VOLTAGE DIVIDER SETUP
// 1M, 470K divider across battery and using internal ADC ref of 1.1V
// Sense point is bypassed with 0.1 uF cap to reduce noise at that point
// ((1e6+470e3)/470e3)*1.1 = Vmax = 3.44 Volts
// 3.44/1023 = Volts per bit = 0.003363075
#define VBAT_PER_BITS 0.0041055718475073313782991202346  // 4.20/1023 volt
#define VMIN 3.6                                  //  Vmin = 3.6 lipo empty
#define VMAX 4.2                                  //  Vmax = 4.2 volt lipo full
int batteryPcnt = 0;                              // Calc value for battery %
int batLoop = 0;                                  // Loop to help calc average
int batArray[3];                                  // Array to store value for average calc.
int BATTERY_SENSE_PIN = A0;                       // select the input pin for the battery sense point
//=========================

void setup()  
{ 
 analogReference(INTERNAL);             // For battery sensing

  delay(500); // Allow time for radio if power used as reset
  
  dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN); 

  metric = getControllerConfig().isMetric;
}

void presentation()  
{ 
  // Send the Sketch Version Information to the Gateway
 // Send the Sketch Version Information to the Gateway
  sendSketchInfo(SKETCH_NAME, SKETCH_VERSION);

  // Register all sensors to gw (they will be created as child devices)
  
  
  present(CHILD_ID_BATTERY, S_MULTIMETER);
  present(CHILD_ID_HUM, S_HUM);
  present(CHILD_ID_TEMP, S_TEMP);
}

void loop()      
{  
  delay(500); // Allow time for radio if power used as reset
  delay(dht.getMinimumSamplingPeriod());
 
  // Fetch temperatures from DHT sensor
  float temperature = dht.getTemperature();
  if (isnan(temperature)) {
      Serial.println("Failed reading temperature from DHT");
  } else if (temperature != lastTemp) {
    lastTemp = temperature;
    if (!metric) {
      temperature = dht.toFahrenheit(temperature);
    }
    send(msgTemp.set(temperature, 1));
    Serial.print("T: ");
    Serial.println(temperature);
  }
  
  // Fetch humidity from DHT sensor
  float humidity = dht.getHumidity();
  if (isnan(humidity)) {
      Serial.println("Failed reading humidity from DHT");
  } else if (humidity != lastHum) {
      lastHum = humidity;
      send(msgHum.set(humidity, 1));
      Serial.print("H: ");
      Serial.println(humidity);
  }
  batM();
  sleep(SLEEP_TIME); //sleep a bit
}

void batM() //The battery calculations
{
   delay(500);
   // Battery monitoring reading
   int sensorValue = analogRead(BATTERY_SENSE_PIN);    
   delay(500);
   
   // Calculate the battery in %
   float Vbat  = sensorValue * VBAT_PER_BITS;
   send(msgbatt.set(Vbat ,2));
   Serial.print("Battery voltage: "); Serial.print(Vbat); Serial.println(" V");  
   int batteryPcnt = static_cast<int>(((Vbat-VMIN)/(VMAX-VMIN))*100.);
   Serial.print("Battery percent: "); Serial.print(batteryPcnt); Serial.println(" %");  
   
   // Add it to array so we get an average of 3 (3x20min)
   batArray[batLoop] = batteryPcnt;
  
   if (batLoop > 2) {  
     batteryPcnt = (batArray[0] + batArray[1] + batArray[2] + batArray[3]);
     batteryPcnt = batteryPcnt / 3;
 
   if (batteryPcnt > 100) {
     batteryPcnt=100;
 }
 
     Serial.print("Battery Average (Send): "); Serial.print(batteryPcnt); Serial.println(" %");
       sendBatteryLevel(batteryPcnt);
       
       batLoop = 0;
      }
     else 
     {
     batLoop++;
     }
}

Rene046

@Rene046 said in reporting battery to domoticZ:

my serial monitor is now making a bit more cense voltage is about 0,10 volt off
but maybe i do something wrong with calculation.
percentage is still something wrong with

im feeding with 3.60 volts at that moment.

reporting battery to domoticZ

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