I have added the C5 capacitor (on the "My Slim 2AA node"), and replaced the nrf24 from my GW with a NRF24L01+PA+LNA.

It's way better

So far, no problem .. I will keep you updated in the following days

Anyway, thanks for your help

what about your nodes after several months ?

I finally have found the problem : I had only Vcc.h in my VCC folder ... So the .cpp file was misisng !!

--> noob alert

@gloob said:

Correct.

thanks

@gloob said:

What type of sensors are they? Do they act like simple "switches" or what kind of signal do they offer on the output?

For the door, I assume they are like reed switch (with magnet fixed on the door itself)
For the movement ... I don't know !

@fleinze
Hi, do you think it's possible to connect de Dallas sensor to pin 7, 8 and 9 of the arduino ?

Like this :

#define ONE_WIRE_BUS 8 // Pin where dallase sensor is connected
#define ONE_WIRE_GND 9
#define ONE_WIRE_VCC 7

I have tried, and the temperature is always 85°C ...

Hello @mrc-core

You can use the Vcc.h library, and mesure the voltage without any wire

https://github.com/Yveaux/Arduino_Vcc

Hi guys !

I'm trying to convert a temperature sketch with CR2032 battery monitoring, and the OneWire without resistor lib (to avoid the 4.7k resistor attached to the Dallas)

But, it seems I have not well followed the instructions to convert a sketch from 1.5.4 to 2.0, because it won't compile !

Here is the original sketch (1.5) :

// avec mesure de la batterie avec Vcc.h
// ok avec pile CR2032 et docATmega328 8Mhz MYSBootloader et efuse 0x07
// pour DS18B20 SANS resistance
// nécessite la lib OneWire : OneWireNoResistor-master.zip
//
// boards.txt :
//proMYSBL.name=docATmega328 8Mhz MYSBootloader

//proMYSBL.upload.tool=avrdude
//proMYSBL.upload.protocol=arduino
//proMYSBL.upload.maximum_size=30720
//proMYSBL.upload.maximum_data_size=2048
//proMYSBL.upload.speed=115200

//proMYSBL.bootloader.tool=avrdude
//proMYSBL.bootloader.low_fuses=0xE2
//proMYSBL.bootloader.high_fuses=0xDA
//proMYSBL.bootloader.extended_fuses=0x07
//proMYSBL.bootloader.unlock_bits=0x3F
//proMYSBL.bootloader.lock_bits=0x0F
//proMYSBL.bootloader.file=MySBootloader/MYSBootloader.hex

//proMYSBL.build.mcu=atmega328p
//proMYSBL.build.f_cpu=8000000L
//proMYSBL.build.board=AVR_UNO
//proMYSBL.build.core=arduino:arduino
//proMYSBL.build.variant=arduino:standard
#include <MySensor.h>
#include <SPI.h>
#include <DallasTemperature.h>
#include <OneWire.h>
#include <Vcc.h>

#define ONE_WIRE_BUS 4 // Pin where dallase sensor is connected
#define ONE_WIRE_GND 5
#define ONE_WIRE_VCC 3
#define ID_BatPcnt 1
#define ID_Bat 2

#define MAX_ATTACHED_DS18B20 16

// 60000 = 1 minute
// 12000 = 2 minutes
// 300000 = 5 minutes
// 600000 = 10 minutes
#define SLEEP_TIME 300000  // Sleep time between reads (in milliseconds)




const float VccMin   = 2.3;             // Vcc mini attendu, en Volts.
const float VccMax   = 3;           // Vcc Maximum attendu, en Volts (2 piles AA neuves)
const float VccCorrection = 2.52/2.6; // calibration : Vcc mesuré au multimètre / Vcc mesuré par l'Arduino par vcc.Read_Volts() dans sketch 1/2
Vcc vcc(VccCorrection);

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
MySensor gw;
MyMessage msgBAT_PCNT(ID_BatPcnt,V_VAR1); // on utilise le type V_VAR1 pour le % de charge des piles
MyMessage msgBAT(ID_Bat,V_VAR2);          // on utilise le type V_VAR2 pour la tension des piles
float lastTemperature[MAX_ATTACHED_DS18B20];
uint8_t numSensors = 0;
boolean receivedConfig = false;
boolean metric = true;
// Initialize temperature message
MyMessage msg(0, V_TEMP);
int oldvalue = 0;
int node_id = 30; // on donne un ID au node

void setup()
{
  // Startup OneWire
#ifdef ONE_WIRE_VCC
  pinMode(ONE_WIRE_VCC, OUTPUT);
  digitalWrite(ONE_WIRE_VCC, HIGH);
#endif
#ifdef ONE_WIRE_GND
  pinMode(ONE_WIRE_GND, OUTPUT);
  digitalWrite(ONE_WIRE_GND, LOW);
#endif

  analogReference(INTERNAL);
  pinMode(BATT_IN_PIN, INPUT);
  pinMode(BATT_VCC_PIN, OUTPUT);
  digitalWrite(BATT_VCC_PIN, LOW);

  sensors.begin();

  // Startup and initialize MySensors library. Set callback for incoming messages.
 // gw.begin();
  gw.begin(NULL, node_id, true);
  // Send the sketch version information to the gateway and Controller
  gw.sendSketchInfo("Temperature Sensor", "1.0");

  // Fetch the number of attached temperature sensors
  numSensors = sensors.getDeviceCount();

  sensors.setWaitForConversion(false);//saves a few mAs per read :-) to debug

  // Present all sensors to controller
  gw.present(ID_BatPcnt, S_CUSTOM);  // type S_CUSTOM pour le capteur "% de charge"
  gw.present(ID_Bat, S_CUSTOM);      // type S_CUSTOM pour le capteur "tension"
  for (int i = 0; i < numSensors && i < MAX_ATTACHED_DS18B20; i++) {
    gw.present(i, S_TEMP);  
  }
}


void loop()
{
  // Process incoming messages (like config from server)
  //gw.process();
// mesure de Vcc
      float v = vcc.Read_Volts();
      // calcul du % de charge batterie
      float p = 100 * ((v - VccMin) / (VccMax - VccMin));
      // On envoie les données des capteurs et de l'état de la batterie au Gateway
      //gw.sendBatteryLevel(p);  // Inutile...
      gw.send(msgBAT_PCNT.set(p, 1)); // 1 décimale
      gw.send(msgBAT.set(v, 3));      // 2 décimales
  // Fetch temperatures from Dallas sensors
  // Fetch temperatures from Dallas sensors
  sensors.requestTemperatures();

  gw.sleep(750);//wait for conversion in sleep mode

  // Read temperatures and send them to controller
  for (int i = 0; i < numSensors && i < MAX_ATTACHED_DS18B20; i++) {

    // Fetch and round temperature to one decimal
    float temperature = static_cast<float>(static_cast<int>((gw.getConfig().isMetric ? sensors.getTempCByIndex(i) : sensors.getTempFByIndex(i)) * 10.)) / 10.;

    // Only send data if temperature has changed and no error
    gw.send(msg.setSensor(i).set(temperature, 1));
      lastTemperature[i] = temperature;
    //if (lastTemperature[i] != temperature && temperature != -127.00) {

      // Send in the new temperature
      
    //}
  }
 
  gw.sleep(SLEEP_TIME);//wake on interrupt or after sleep-time
}

Here is my "converted" sketch :

// avec mesure de la batterie avec Vcc.h
// ok avec pile CR2032 et docATmega328 8Mhz MYSBootloader et efuse 0x07
// pour DS18B20 SANS resistance
// nécessite la lib OneWire : OneWireNoResistor-master.zip
//
// boards.txt :
//proMYSBL.name=docATmega328 8Mhz MYSBootloader

//proMYSBL.upload.tool=avrdude
//proMYSBL.upload.protocol=arduino
//proMYSBL.upload.maximum_size=30720
//proMYSBL.upload.maximum_data_size=2048
//proMYSBL.upload.speed=115200

//proMYSBL.bootloader.tool=avrdude
//proMYSBL.bootloader.low_fuses=0xE2
//proMYSBL.bootloader.high_fuses=0xDA
//proMYSBL.bootloader.extended_fuses=0x07
//proMYSBL.bootloader.unlock_bits=0x3F
//proMYSBL.bootloader.lock_bits=0x0F
//proMYSBL.bootloader.file=MySBootloader/MYSBootloader.hex

//proMYSBL.build.mcu=atmega328p
//proMYSBL.build.f_cpu=8000000L
//proMYSBL.build.board=AVR_UNO
//proMYSBL.build.core=arduino:arduino
//proMYSBL.build.variant=arduino:standard
#include <MySensors.h>
#include <SPI.h>
#include <DallasTemperature.h>
#include <OneWire.h>
#include <Vcc.h>

#define ONE_WIRE_BUS 4 // Pin where dallase sensor is connected
#define ONE_WIRE_GND 5
#define ONE_WIRE_VCC 3


#define ID_BatPcnt 1
#define ID_Bat 2

#define MAX_ATTACHED_DS18B20 16
#define MY_NODE_ID 123
#define MY_RADIO_NRF24

// 60000 = 1 minute
// 12000 = 2 minutes
// 300000 = 5 minutes
// 600000 = 10 minutes
#define SLEEP_TIME 300000  // Sleep time between reads (in milliseconds)


const float VccMin   = 2.3;             // Vcc mini attendu, en Volts.
const float VccMax   = 3;           // Vcc Maximum attendu, en Volts (2 piles AA neuves)
const float VccCorrection = 2.52/2.6; // calibration : Vcc mesuré au multimètre / Vcc mesuré par l'Arduino par vcc.Read_Volts() dans sketch 1/2
Vcc vcc(VccCorrection);

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
//MySensor gw;
MyMessage msgBAT_PCNT(ID_BatPcnt,V_VAR1); // on utilise le type V_VAR1 pour le % de charge des piles
MyMessage msgBAT(ID_Bat,V_VAR2);          // on utilise le type V_VAR2 pour la tension des piles
float lastTemperature[MAX_ATTACHED_DS18B20];
uint8_t numSensors = 0;
boolean receivedConfig = false;
boolean metric = true;
// Initialize temperature message
MyMessage msg(0, V_TEMP);
int oldvalue = 0;

void before()
{
  // Startup up the OneWire library
  sensors.begin();
}

void setup()
{
  // Startup OneWire
#ifdef ONE_WIRE_VCC
  pinMode(ONE_WIRE_VCC, OUTPUT);
  digitalWrite(ONE_WIRE_VCC, HIGH);
#endif
#ifdef ONE_WIRE_GND
  pinMode(ONE_WIRE_GND, OUTPUT);
  digitalWrite(ONE_WIRE_GND, LOW);
#endif

  analogReference(INTERNAL);
  pinMode(BATT_IN_PIN, INPUT);
  pinMode(BATT_VCC_PIN, OUTPUT);
  digitalWrite(BATT_VCC_PIN, LOW);

    
}

void presentation()
{
  // Startup and initialize MySensors library. Set callback for incoming messages.
 // gw.begin();
  //gw.begin(NULL, node_id, true);
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("TS sR batt", "2.0");

  // Fetch the number of attached temperature sensors
  numSensors = sensors.getDeviceCount();

  sensors.setWaitForConversion(false);//saves a few mAs per read :-) to debug

  // Present all sensors to controller
  present(ID_BatPcnt, S_CUSTOM);  // type S_CUSTOM pour le capteur "% de charge"
  present(ID_Bat, S_CUSTOM);      // type S_CUSTOM pour le capteur "tension"
  for (int i = 0; i < numSensors && i < MAX_ATTACHED_DS18B20; i++) {
    present(i, S_TEMP);  
  }
}

void loop()
{
  // Process incoming messages (like config from server)
  //gw.process();
// mesure de Vcc
      float v = vcc.Read_Volts();
      // calcul du % de charge batterie
      float p = 100 * ((v - VccMin) / (VccMax - VccMin));
      // On envoie les données des capteurs et de l'état de la batterie au Gateway
      //gw.sendBatteryLevel(p);  // Inutile...
      send(msgBAT_PCNT.set(p, 1)); // 1 décimale
      send(msgBAT.set(v, 3));      // 2 décimales
  // Fetch temperatures from Dallas sensors
  // Fetch temperatures from Dallas sensors
  sensors.requestTemperatures();

  sleep(750);//wait for conversion in sleep mode

  // Read temperatures and send them to controller
  for (int i = 0; i < numSensors && i < MAX_ATTACHED_DS18B20; i++) {

    // Fetch and round temperature to one decimal
    float temperature = static_cast<float>(static_cast<int>((gw.getConfig().isMetric ? sensors.getTempCByIndex(i) : sensors.getTempFByIndex(i)) * 10.)) / 10.;

    // Only send data if temperature has changed and no error
    send(msg.setSensor(i).set(temperature, 1));
      lastTemperature[i] = temperature;
    //if (lastTemperature[i] != temperature && temperature != -127.00) {

      // Send in the new temperature
      
    //}
  }
 
  sleep(SLEEP_TIME);//wake on interrupt or after sleep-time
}

And the error given by the Arduino IDE :

In file included from /home/carmelo/Arduino/tmp/tmp_tempbattv2/tmp_tempbattv2.ino:28:0:
/home/carmelo/Arduino/libraries/MySensors/MySensors.h:332:2: 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.
  ^
exit status 1
Erreur de compilation pour la carte Arduino Pro or Pro Mini

@gloob

ok ! I will check the wires and signal output from the movement sensors

@gloob said:

What type of sensors are they? Do they act like simple "switches" or what kind of signal do they offer on the output?

For the door, I assume they are like reed switch (with magnet fixed on the door itself)
For the movement ... I don't know !

Hello,
In my house, I have an old alarm system installed, with :

• 4 doors sensors
• 4 move sensors

All the sensors are wired, and all the cables are going un a closet, where the old alarm system is installed.

I don't want to use the old alarm because it is broken, but I want to reuse the sensors. I have electric power in the closet, so it will not be a batteries powered node, so is my idea realisable :

• Arduino powered by USB, with at least 8 inputs (arduino uno ?)
• I connect 1 cable of each sensor on each input
• the other cables from the sensors connected to ground of the arduino

is it correct ?

Thanks a lot for your answer

I must be an idiot but ... I can't compile your sketch ... Which version of MySensors lib are you using ? (I'm with 1.5.4)

Hello,
Is it possible to have 1.5.4 and 2.0 MySensors on the same computer ?

@sghazagh said:

@m26872 Thank you very much mate.
I just added the battery reporting part and it works like a charm.

Many many thanks...
Did you add 1MOhm resistor between the Input pin and the reed switch ?

@gloob said:

Correct.

thanks