💬 Temperature Sensor

Alex B Goode

Why don't we use an internal pull-up resistor available within an arduino board? Why additional external one?

pinMode(pin, INPUT); // set pin to input
digitalWrite(pin, HIGH); // turn on pullup resistors

mfalkvidd

@Alex-B-Goode the datasheet says "The 1-Wire bus requires an external pullup resistor of approximately 5kΩ"
The internal pull-up of most Arduinos are 20-50kΩ

So my guess is that the reason is that the person who created the instructions read the datasheet and chose to follow its recommendation. But accounding to http://electronics.stackexchange.com/a/62096/107155 the exact size might not be important, so it might be possible to use the internal pull up. Try it and let us know if it works.

toddsantoro

Does this example compile for anyone??? I get this error:

In file included from /Users/Documents/Arduino/tas_temp/tas_temp.ino:37:0:
/Users/Documents/Arduino/libraries/DallasTemperature/DallasTemperature.h: In function 'void loop()':
/Users/Documents/Arduino/libraries/DallasTemperature/DallasTemperature.h:252:13: error: 'int16_t DallasTemperature::millisToWaitForConversion(uint8_t)' is private
int16_t millisToWaitForConversion(uint8_t);

tas_temp:85: error: within this context
int16_t conversionTime = sensors.millisToWaitForConversion(sensors.getResolution());
^
exit status 1
within this context

mfalkvidd

@toddsantoro see post 2 and 3 in this thread or read the instructions on the build page, just under the "Example" heading.

mrwomble

@mfalkvidd said:

@toddsantoro see post 2 and 3 in this thread or read the instructions on the build page, just under the "Example" heading.

^ What he said 😁

toddsantoro

@mfalkvidd OK. I have it compiling and uploaded to the nano. My config file looks like this now:

sensor 6:
  -platform: onewire
    names:
      some_id: outside
      mount_dir: "/mnt/1wire"

I get an error when I restart HASS on the Pi.

ERROR (Thread-6) [homeassistant.components.sensor.onewire] No onewire sensor found. Check if dtoverlay=w1-gpio is in your /boot/config.txt. Check the mount_dir parameter if it's defined.

I guess my question is do I need to define the mount_dir variable and if so is the one I have correct? And if it is correct do I need to create that directory on my Pi?

I also do not get any output in the Arduino Serial Monitor window. Not sure if I even should...

Thanks in advance for any help...

mfalkvidd

@toddsantoro I am not familiar with homeassistant so I have no clue unfortunately.

About debug output on the serial monitor: Debug needs to be enabled first. See instructions at https://forum.mysensors.org/topic/666/debug-faq-and-how-ask-for-help and https://www.mysensors.org/build/debug

Debug output is often essential when troubleshooting.

toddsantoro

@mfalkvidd Thank you!!! I get this output in the serial monitor

TSM:INIT
TSM:RADIO:OK
TSP:ASSIGNID:OK (ID=2)
TSM:FPAR
TSP:MSG:SEND 2-2-255-255 s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=bc:
TSM:FPAR
TSP:MSG:SEND 2-2-255-255 s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=bc:
TSP:MSG:READ 0-0-2 s=255,c=3,t=8,pt=1,l=1,sg=0:0
TSP:MSG:FPAR RES (ID=0, dist=0)
TSP:MSG:PAR OK (ID=0, dist=1)
TSM:FPAR:OK
TSM:ID
TSM:CHKID:OK (ID=2)
TSM:UPL
TSP:PING:SEND (dest=0)
TSP:MSG:SEND 2-2-0-0 s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=ok:1
TSP:MSG:READ 0-0-2 s=255,c=3,t=25,pt=1,l=1,sg=0:1
TSP:MSG:PONG RECV (hops=1)
TSP:CHKUPL:OK
TSM:UPL:OK
TSM:READY
TSP:MSG:SEND 2-2-0-0 s=255,c=3,t=15,pt=6,l=2,sg=0,ft=0,st=ok:0100
TSP:MSG:SEND 2-2-0-0 s=255,c=0,t=17,pt=0,l=5,sg=0,ft=0,st=ok:2.0.0
TSP:MSG:SEND 2-2-0-0 s=255,c=3,t=6,pt=1,l=1,sg=0,ft=0,st=ok:0
TSP:MSG:READ 0-0-2 s=255,c=3,t=6,pt=0,l=1,sg=0:I
TSP:MSG:SEND 2-2-0-0 s=255,c=3,t=11,pt=0,l=18,sg=0,ft=0,st=ok:Temperature Sensor
TSP:MSG:SEND 2-2-0-0 s=255,c=3,t=12,pt=0,l=3,sg=0,ft=0,st=ok:1.1
Request registration...
TSP:MSG:SEND 2-2-0-0 s=255,c=3,t=26,pt=1,l=1,sg=0,ft=0,st=ok:2
TSP:MSG:READ 0-0-2 s=255,c=3,t=27,pt=1,l=1,sg=0:1
Node registration=1
Init complete, id=2, parent=0, distance=1, registration=1

Does this look OK? If so I will ask my previous question on the Home Assistant forum. You have been a great help and once I get one of these things down I will be able to help others:)

mfalkvidd

@toddsantoro yes that looks good.

The "st=ok:xyz" means message xyz was acknowledged by the destination node (in your case by the gateway)

stingone

No compile error but i cant see anything on the serial monitor. also the temp sensor burend out with a 4k7 resistor :S

remis

@stingone
Hi. The same issue for me . I solve it with : 38400 bauds configuration serial port ( instead of 115200 default value)
and i lowering the RF power output with low_pa enable: it confirms that I have some issues with power suppply.

good luck

bentrik

It seems the DallasTempereture library is not a part of the default Library setup from Mysensors as of version 2.0? I tried to compile the above code, but I had to manually download DallasTemperature from GitHub first. Then OneWire was also missing. Adding these two libraries brought me a bit further, but I get a long list of errors connected to OneWire. What libraries should be used?

mfalkvidd

@bentrik the library is part of the MySensorsArduinoExamples, which can be downloaded at https://github.com/mysensors/MySensorsArduinoExamples/archive/master.zip

Sealander

Hi All, i'm also new here and into this. Like others i also ran into problems compiling this sketch, i tried al libraries mentioned in the posts in this thread, but no go. keep getting this error message:

In file included from C:\Users\Gebruiker\Desktop\My Sensors\MySensors-master\MySensorsArduinoExamples-master\examples\DallasTemperatureSensor\DallasTemperatureSensor.ino:37:0:

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

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

 int16_t millisToWaitForConversion(uint8_t);
         ^

DallasTemperatureSensor:85: error: within this context

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

      exit status 1

within this context

Can someone help me with this problem? i have no clue at all and woud really like to build me a working sensor so i can hook it up to my Domoticz setup. thanks

hin this context

stingone

@Sealander

see solution above. Delete your dallas library and replace with the one above in the master zip file. That was the solution for me.

bentrik

@mfalkvidd Thanks for the feedback, It got me a bit further.
I have a fresh Windows Arduino 1.6.12 install, and I have download the MySensors Library 2.0 through the Library manager, and I've found MySensors.h and MyConfig.h under \Documents\Arduino\libraries\MySensors

I'm able to compile and upload the RelayActuator but quite a few of the library files seem to be missing in 2.0. DallasTemperature seem to be one of them.-But I struggled with DallasTemperature and some others.

I copied all the whole MySensors-1.5.4.zip library files to to C:\Program Files (x86)\Arduino\libraries, and I managed to compile, but I got an error message saying Invalid version found: 1.04
Then I tried to only copy the DallasTemperature and OneWire folder, and I had no errors.

-So I assume all library files the entire MySensors Examples catalouge are not ready in Libraries 2.0.

Anyways: The solution to get this sensor to work with Arduino 1.6.12, following the Download and API guide, adding MySensors 2.0 through the Library Manager, is to manually add:
\Arduino\libraries\DallasTemperature
\Arduino\libraries\OneWire\

-from https://github.com/mysensors/MySensorsArduinoExamples/archive/master.zip
-And not adding the whole structure.

Now I just have to find out how to make it speak to my serial gateway :satisfied:

wendan

I get the feeling it is possible to use more then one sensor parallel on port 3. I wonder if each sensor is being monitored? Am I right and do I need to alter or change something?

wendan

my feeling was right.... i just connected 5 temp censors it is working great

Joseph Absher

I am getting the error:

DallasTemperatureSensor.ino: In function 'void loop()':
DallasTemperatureSensor:93: error: 'getConfig' was not declared in this scope
     float temperature = static_cast<float>(static_cast<int>((getConfig().isMetric?sensors.getTempCByIndex(i):sensors.getTempFByIndex(i)) * 10.)) / 10.;

Does anyone have any suggestions?

mfalkvidd

@Joseph-Absher https://forum.mysensors.org/topic/5841/getconfig-was-not-declared-in-this-scope-v2-1-1-fixed

💬 Temperature Sensor

9

11.7k

11.2k

113.0k