💬 Temperature Sensor

Vincent Lgrd

Hello,
I'm a beginner in home automation and I'm trying MySensor for the first time. My acctual configaration is a Domoticz on a Raspberry Pi 2B and a RFLink GW with a NRF24L01 module to try to measure with a MySensor probe.
I've building a temperature sensor with a DS18B20 sensor on a Official Arduino nano board and I can not run the sensor correctly.
The arduino serial monitor show these:

0 MCO:BGN:INIT NODE,CP=RNNNA--,VER=2.1.1
3 TSM:INIT
4 TSF:WUR:MS=0
11 TSM:INIT:TSP OK
12 TSM:FPAR
15 TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
2022 !TSM:FPAR:NO REPLY
2024 TSM:FPAR
2026 TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
4034 !TSM:FPAR:NO REPLY
4036 TSM:FPAR
4038 TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
6046 !TSM:FPAR:NO REPLY
6048 TSM:FPAR
6050 TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
8058 !TSM:FPAR:FAIL
8059 TSM:FAIL:CNT=1
8061 TSM:FAIL:PDT

Someone could help me?

gohan

Did you set node ID?

Vincent Lgrd

Where should I put it? In arduino sensor code?

gohan

Yes, it's like #define MY_NODE_ID 2 and put it at beginning of the code

Vincent Lgrd

Ok , with Node ID, I have this:

0 MCO:BGN:INIT NODE,CP=RNNNA--,VER=2.1.1
3 MCO:BGN:BFR
63 TSM:INIT
64 TSF:WUR:MS=0
71 TSM:INIT:TSP OK
73 TSM:INIT:STATID=2
75 TSF:SID:OK,ID=2
76 TSM:FPAR
113 TSF:MSG:SEND,2-2-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
2120 !TSM:FPAR:NO REPLY
2122 TSM:FPAR
2158 TSF:MSG:SEND,2-2-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
4166 !TSM:FPAR:NO REPLY
4168 TSM:FPAR
4204 TSF:MSG:SEND,2-2-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
6212 !TSM:FPAR:NO REPLY
6214 TSM:FPAR
6250 TSF:MSG:SEND,2-2-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
8258 !TSM:FPAR:FAIL
8259 TSM:FAIL:CNT=1

gohan

ok, but we are going off topic since now your problem seems to be the radios can't talk to each other, so if you take a look in troubleshooting section you will see others having this error that usually if bad wiring, missing capacitor on vcc of the nrf24, range/interference problem. How far are the 2 radio modules? Try putting them 2-3 meters apart.

Vincent Lgrd

Thanks, my radio modules are very close, they are on the same table for test. On of them may be damaged, I must receive others. I'm going in the troubleshooting section to avoid polluting this article.
Thanks for your help

gohan

Put them at least 2 meters apart, just to play safe.

Vincent Lgrd

It's the same, I've even reversed the radio modules

dantefff

@gohan , I'm in the same situation as @Vincent-Lgrd. I'm powering my arduino UNO from usb (to test). Is that a possible problem?

gohan

I use USB pretty much all the time and never had any issue. I had many problems in the beginning with radio modules that had the black blob instead of the ic and once I got the new ones everything started to work. I'm still working on increasing the range, probably because they are clones and not good quality.

dantefff

@gohan I changed my getaway to an old good rpi model b, and the temperature node started to work, so I think that the problem was on de getaway wiring or in the getaway code itsef. Thanks

gewoonandre

Is it also possible to upload the example code to a Arduino Nano, and connect it via USB to a Windows PC with Domoticz?

Or will it only work with the radio modules (and extra gateway?)

gohan

I think you can use the serial gateway sketch and the sensor code in setup and loop

CurtisMack

Thank you for posting this project!

Could like to suggest a small change to the sketch. There are several posts out there about this not running with the latest DallasTemperature library. The call to sensors.millisToWaitForConversion won't compile because the method is not public. From another post I learned that this method is very simple and could be included in the sketch. I would suggest changing the line

int16_t conversionTime = sensors.millisToWaitForConversion(sensors.getResolution());

to read

int16_t conversionTime = millisToWaitForConversion(sensors.getResolution());

and add this function to the sketch:

int16_t millisToWaitForConversion(uint8_t bitResolution)
{
switch (bitResolution)
{
case 9:
return 94;
case 10:
return 188;
case 11:
return 375;
default:
return 750;
}
}

In any case, this might help the next person using this project.

Woeka

I had some problems with Domoticz triggering an event based on a certain temperature. When using multiple DS18B20 it is a good idea to use the ID of the sensors to always get the same order of sensors. If one is not read, for example B of A, B, C then C becomes B. See: https://forum.mysensors.org/topic/4143/about-ds18b20-onewire for more info. You maybe need to adjust the sketch a bit for your number of sensors.

Rene046

@CurtisMack

could you explain how to solve this ?
I'm no pro, and wanted to use 1 single DS1820 in a sketch and also got same message about :
int16_t conversionTime = sensors.millisToWaitForConversion(sensors.getResolution());

Mysensors is hard hard nut to learn, specially because of a lot of changes in the newer version 2.1.0 ...(and im still learning to work with arduino software , i keep running often against old sketches i like to try as sample to use them in other sketches , (my way of learning) but than they dont work with latest version. because something changed.
but i love the mysensors functions.

p.s sorry for my bad english....

kontrollable

@Rene046 The solution is here:https://forum.mysensors.org/topic/4828/temperature-sensor/46

Rene046

I sofar got the sketch running and giving good data on serial and into domoticz

i only could use some help with how to sent my Temperature in Celsius to domoticz to
i tried to use:
send(msgTemp.set(insideThermometer ,2));
and
send(msgTemp.set(tempC,2));

both without luck, the first did transmit some data but wrong numbers
second did nothing think because with this i done i does not know what address the DS1820 is on.

Im learning every day something new....

Maybe someone could help,

Rene046

forgot the 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 <BH1750.h>
#include <Wire.h>
#include <OneWire.h>
#include <DallasTemperature.h>

// Data wire is plugged into port 3 on the Arduino
#define ONE_WIRE_BUS 3

// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature. 
DallasTemperature sensors(&oneWire);

// arrays to hold device address
DeviceAddress insideThermometer;


unsigned long SLEEP_TIME = 180000; // Sleep time between reads (in milliseconds)
int BATTERY_SENSE_PIN = A0;  // select the input pin for the battery sense point
int SOLAR_SENSE_PIN = A1;  // select the input pin for the solar sense point
#define CHILD_ID_BATTERY 4
#define CHILD_ID_SOLAR 6
#define CHILD_ID_LIGHT 1
#define CHILD_ID_TEMP1 2

BH1750 lightSensor;

int oldBatteryPcnt = 0;
MyMessage msgTemp(CHILD_ID_TEMP1,V_TEMP);
MyMessage msgbatt(CHILD_ID_BATTERY, V_VOLTAGE);
MyMessage msgsolar(CHILD_ID_SOLAR, V_VOLTAGE);
MyMessage msg(CHILD_ID_LIGHT, V_LIGHT_LEVEL);
uint16_t lastlux;  //lux

void setup(void)
{
// use the 1.1 V internal reference
  #if defined(__AVR_ATmega2560__)
  analogReference(INTERNAL1V1);
  #else
  analogReference(INTERNAL);
  #endif

  
// Send the sketch version information to the gateway and Controller
  sendSketchInfo("Battery Meter", "2.0");
  present(CHILD_ID_LIGHT, S_LIGHT_LEVEL);
 
  //Serial.begin(9600); // start serial port
  Serial.print("Locating devices..."); // locate devices on the bus
  sensors.begin(); // start reading sensor
  Serial.print("Found ");
  Serial.print(sensors.getDeviceCount(), DEC);
  Serial.println(" devices.");
  Serial.print("Parasite power is: "); // report parasite power requirements
  
  if (sensors.isParasitePowerMode()) Serial.println("ON");
  else Serial.println("OFF"); 
// assign address manually.  the addresses below will beed to be changed
  // to valid device addresses on your bus.  device address can be retrieved
  // by using either oneWire.search(deviceAddress) or individually via
  // sensors.getAddress(deviceAddress, index)
  //insideThermometer = { 0x28, 0x1D, 0x39, 0x31, 0x2, 0x0, 0x0, 0xF0 };

  // Method 1:
  // search for devices on the bus and assign based on an index.  ideally,
  // you would do this to initially discover addresses on the bus and then 
  // use those addresses and manually assign them (see above) once you know 
  // the devices on your bus (and assuming they don't change).
  if (!sensors.getAddress(insideThermometer, 0)) Serial.println("Unable to find address for Device 0"); 
  
  // method 2: search()
  // search() looks for the next device. Returns 1 if a new address has been
  // returned. A zero might mean that the bus is shorted, there are no devices, 
  // or you have already retrieved all of them.  It might be a good idea to 
  // check the CRC to make sure you didn't get garbage.  The order is 
  // deterministic. You will always get the same devices in the same order
  //
  // Must be called before search()
  //oneWire.reset_search();
  // assigns the first address found to insideThermometer
  //if (!oneWire.search(insideThermometer)) Serial.println("Unable to find address for insideThermometer");

  // show the addresses we found on the bus
  Serial.print("Device 0 Address: ");
  printAddress(insideThermometer);
  Serial.println();

  // set the resolution to 9 bit (Each Dallas/Maxim device is capable of several different resolutions)
  sensors.setResolution(insideThermometer, 9);
 
  Serial.print("Device 0 Resolution: ");
  Serial.print(sensors.getResolution(insideThermometer), DEC); 
  Serial.println();  
}

// function to print the temperature for a device
void printTemperature(DeviceAddress deviceAddress)
{
  // method 1 - slower
  //Serial.print("Temp C: ");
  //Serial.print(sensors.getTempC(deviceAddress));
  //Serial.print(" Temp F: ");
  //Serial.print(sensors.getTempF(deviceAddress)); // Makes a second call to getTempC and then converts to Fahrenheit

  // method 2 - faster
  float tempC = sensors.getTempC(deviceAddress);
  Serial.print("Temp C: ");
  Serial.print(tempC);
  Serial.print(" Temp F: ");
  Serial.println(DallasTemperature::toFahrenheit(tempC)); // Converts tempC to Fahrenheit
}



void loop(void)
{
  // call sensors.requestTemperatures() to issue a global temperature 
  // request to all devices on the bus
  Serial.print("Requesting temperatures...");
  sensors.requestTemperatures(); // Send the command to get temperatures
  Serial.println("DONE");
  
  
  // It responds almost immediately. Let's print out the data
  printTemperature(insideThermometer); // Use a simple function to print out the data
{

 // get the battery Voltage
  int sensorValue2 = analogRead(BATTERY_SENSE_PIN);
  delay(1000);   
  
  int sensorValue1 = analogRead(BATTERY_SENSE_PIN);
  delay(100);
  
  int sensorValue = analogRead(BATTERY_SENSE_PIN);
  delay(1000);
    
  int sensorValueS = analogRead(SOLAR_SENSE_PIN);
  delay(1000);
 
#ifdef MY_DEBUG
  Serial.print("Battery Voltage2: ");
  Serial.println(sensorValue2);
  Serial.print("Battery Voltage1: ");
  Serial.println(sensorValue1);
  Serial.print("Battery Voltage: ");
  Serial.println(sensorValue);
  Serial.print("Solar Voltage: ");
  Serial.println(sensorValueS);
#endif

  // 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
  const float vRef = 4.200/ 1.05/ 1023 ;  
  int batteryPcnt = sensorValue / 10;
  float batteryV  = sensorValue * 0.0042598 ; // 0.0038952294568380753114792412093 max 4,2 volt
  float batteryS  = sensorValueS * 0.0102459 ; // 0.0038952294568380753114792412093 max 10 volt
  
#ifdef MY_DEBUG
  Serial.print("Battery Voltage: ");
  Serial.print(batteryV);
  Serial.println(" V");
send(msgbatt.set(batteryV ,2));

  Serial.print("Solar Voltage: ");
  Serial.print(batteryS);
  Serial.println(" V");
send(msgsolar.set(batteryS ,2));

  Serial.print("Battery percent: ");
  Serial.print(batteryPcnt);
  Serial.println(" %");
#endif

   if (oldBatteryPcnt != batteryPcnt) {
    // Power up radio after sleep
    sendBatteryLevel(batteryPcnt);
    oldBatteryPcnt = batteryPcnt;
  }
      
  uint16_t lux = lightSensor.readLightLevel();// Get Lux value
  Serial.println(lux);
  if (lux != lastlux) {
      send(msg.set(lux));
      lastlux = lux;
  }
  sleep(SLEEP_TIME);
}}

// function to print a device address
void printAddress(DeviceAddress deviceAddress)
{
  for (uint8_t i = 0; i < 8; i++)
  {
    if (deviceAddress[i] < 16) Serial.print("0");
    Serial.print(deviceAddress[i], HEX);
  }
}

💬 Temperature Sensor

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