💬 Temperature Sensor

Rene046

so far my result.

had to use float TempC = 50.5 at the start
but in my serial i get the right temperature,
but using it in the loop gives me still wrong number 50.5 so gets not updated.

// 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 = 30000; // 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;
float TempC = 50.5;
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 = { 0x10, 0x9C, 0x04, 0x26, 0x01, 0x08, 0x0, 0x8C };


  // 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("DS1820 Temperature: ");
  Serial.print(TempC);
  Serial.println(" C");
send(msgTemp.set(TempC ,2));

  
  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);
  }
}

Rene046

here is my serial result.

45651 MCO:SLP:WUP=-1
Requesting temperatures...DONE
Temp C: 17.87 Temp F: 64.18
Battery Voltage2: 931
Battery Voltage1: 926
Battery Voltage: 927
Solar Voltage: 393
DS1820 Temperature: 50.50 C
49545 TSF:MSG:SEND,2-2-0-0,s=2,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:50.50
Battery Voltage: 3.95 V
49557 TSF:MSG:SEND,2-2-0-0,s=4,c=1,t=38,pt=7,l=5,sg=0,ft=0,st=OK:3.95
Solar Voltage: 4.03 V
49569 TSF:MSG:SEND,2-2-0-0,s=6,c=1,t=38,pt=7,l=5,sg=0,ft=0,st=OK:4.03
Battery percent: 92 %
1
49577 MCO:SLP:MS=30000,SMS=0,I1=255,M1=255,I2=255,M2=255
49584 MCO:SLP:TPD

Rene046

i dont know how but i got it now running perfect, and cleaned up a bid.
for if anyone could use ....

// 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 = 30000; // 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;
float TempC = 50.5;
int oldBatteryPcnt = 0;
MyMessage msgTempC(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);
   
  sensors.begin(); // start reading sensor
  
  // search for devices on the bus and assign based on an index.  ideally,
  if (!sensors.getAddress(insideThermometer, 0)) Serial.println("Unable to find address for Device 0"); 
  
  // set the resolution to 9 bit (Each Dallas/Maxim device is capable of several different resolutions)
  //sensors.setResolution(insideThermometer, 9);
}

void loop(void)
{
  
 // 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
  float TempC = sensors.getTempC(insideThermometer);

#ifdef MY_DEBUG
  Serial.print("DS1820 Temperature: ");
  Serial.print(TempC);
  Serial.println(" C");
send(msgTempC.set(TempC ,2));
  
  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);
}

CptSlow

Hi,

Can someone push me into the right direction.
I followed the "tutorial" and setup a Serial Gateway. This seems to be running just fine.

Now i want to add a node with a temperature sensor.

Both are using the NRF24L radio.

On my node i get an errors in the serial monitor.
What did i do wrong?

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 FAIL
72 TSM:FAIL:CNT=1
74 TSM:FAIL:PDT
10077 TSM:FAIL:RE-INIT
10079 TSM:INIT
10085 !TSM:INIT:TSP FAIL
10088 TSM:FAIL:CNT=2
10089 TSM:FAIL:PDT

gohan

have you checked https://www.mysensors.org/build/debug ?

CptSlow

Hi Gohan,

I did not know that page. Thanks for the push :+1:

I think i have crappy radio tho, because i switched it with anotherone i have and it started working....
Thanks!

gohan

don't tell me about crappy nrf24... I got a bunch of really bad ones that work but only for 5 meters max.

skywatch

I just tried this today but get an error. Here's the output.....

Arduino: 1.8.3 (Windows 10), Board: "Arduino Pro or Pro Mini, ATmega328 (3.3V, 8 MHz)"

In file included from C:\Users\captain\Documents\Arduino\MYS-HW-CH\MYS-HW-CH.ino:37:0:

C:\Users\captain\Documents\Arduino\libraries\DallasTemperature/DallasTemperature.h: In function 'void loop()':

C:\Users\captain\Documents\Arduino\libraries\DallasTemperature/DallasTemperature.h:252:13: error: 'int16_t DallasTemperature::millisToWaitForConversion(uint8_t)' is private

 int16_t millisToWaitForConversion(uint8_t);

         ^

MYS-HW-CH:85: error: within this context

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

exit status 1
within this context

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

THis is MYS 2.1.1 installed so a bit baffled as to what is causing the problem, it should just work, right?

Anyone with any insight please let me know! :)

mfalkvidd

@skywatch just follow the instructions on the build page:

This example uses a modified version of the external DTH library, which is included in the MySensors external examples. Please install it and restart the Arduino IDE before trying to compile.

skywatch

Thank you - that did it.

But it would be good to have that info in the file header too, just to call attention to it. Either that or a structured step-by-step tutorial so that things like this don't get left out.

At least it works now though, kul!

markjgabb

really silly question.....so does create multiple sensors? so i would have temp1 temp2 or does it combine the value of both for an averaged temprature?
the way i read it it would present mutiple sensors i think?

gohan

It creates the sensors that you present during the presentation.

markjgabb

appologies for the badly worded questions...the code in its example format....
am i reading it correctly that it presents sensors based on the variable for number of temp sensors?

gohan

It will present different sensros according to the #define MAX_ATTACHED_DS18B20 16

Digdogger

Hi,
I have only one sensor on the mini pro and I have this in the logs:
2017-07-30 14:41:28.492 (Mysensor) Temp (Congélateur)
2017-07-30 14:41:28.497 (Mysensor) Temp (Congélateur)
2017-07-30 14:41:28.501 (Mysensor) Temp (Congélateur)
2017-07-30 14:41:28.506 (Mysensor) Temp (Congélateur)
2017-07-30 14:41:28.510 (Mysensor) Temp (Congélateur)
2017-07-30 14:41:28.515 (Mysensor) Temp (Congélateur)
2017-07-30 14:41:28.521 (Mysensor) Temp (Congélateur)
2017-07-30 14:41:28.526 (Mysensor) Temp (Congélateur)

Sleep time is set to 60000ms, why the time between 2 messages is around 5ms???

mfalkvidd

@Digdogger it can depend on a lot of things. The best way to know is to look at the debug logs from the node and the gateway from the time when it happened. There could be a problem with the communication, with the radios, with the power supply, with the sketch, etc.

It could also be that you're using a microcontroller that doesn't support MySensors sleep, such as the esp8266. But it is just a guess. The information that's usually needed to troubleshoot is listed in https://forum.mysensors.org/topic/666/debug-faq-and-how-ask-for-help/

Digdogger

OK thanks mfalkvidd

ben999

Slightly off-topic here... but related to this particular sketch

If you look close enough (and copy-paste the sketch into your IDE) you'll witness that one curly-bracket is technically missing at the end of loop()...

But as I added it to the sketch I got error

Sketch compiles fine "with" the missing curly-bracket... ???

Any comment to that (in my sense) funny behavior ?

mfalkvidd

@ben999 the simple answer is probably that the backet isn't missing :)

Can you show why you think it is missing?

ben999

@mfalkvidd

I must have gone mad then :ghost:

Check the loop()
The last closing curly--bracket is for

for (int i=0; i<numSensors && i<MAX_ATTACHED_DS18B20; i++) {

So which one closes

void loop()     {

If i add one more to "make it right" then hell brakes loose...

sketch_jul31a:110: error: expected declaration before '}' token
 }
 ^
exit status 1
expected declaration before '}' token

1-That's the only sketch behaving this way
2-Even the "IDE-automatic-opening-bracket-finder" (shows which bracket is open when placing cursor on closing bracket) can NOT find the right bracket for loop()...

:scream:

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