Re: [mh] One Wire sensors

Like Jeff I also get oddball temp readings equally rarely and typically 
of about 80deg C, however  since I live in the UK I can safely filter 
anything over 30deg C  :-)

OH and I attached the wrong screenshot in my previous email, the html 
interface should be like the attached - sorry

G

On 26/12/2020 16:01, Jeff Siddall via misterhouse-users wrote:
>
> Steve,
>
> I use the MH Owfs_Item:
>
> $Basement_Thermometer = new Owfs_Item("10.651A40000800", "Basement 
> Thermometer");
>
> Use the get method to specify what to get, then read it with state:
>
>       my $temp = $Basement_Thermometer->get("temperature");
>       my $temp = $Basement_Thermometer->state();
>
> Of course you also need to install and setup owfs.
>
> To me, that seemed to me like the most logical way to use them.
>
> They are fairly reliable, but ever once in a while (maybe every 10,000 
> or 100,000 readings) I get a strange result, like an indoor 
> temperature of 80 C.  This is a minor thing, and for me only results 
> in a text saying something is too hot so I haven't tried to figure out 
> if it is a physical issue (interference), an owfs issue, or a 
> Owfs_Item issue.
>
> Also, I would definitely recommend soldering the connections.
>
> Good luck!
>
>
> On 2020-12-26 9:02 a.m., Stephen Switzer wrote:
>> Several years ago, I ordered a serial to RJ11 adapter from 
>> ibutton(something), called the link 12, and a few temperature sensors 
>> that look like the standard TO-92 transistor package. I connected it 
>> to MH, added one sensor to the network and tried to see if it worked. 
>> I had plans to place sensors all around the house.
>>
>> However, I hadn't ever seen any response from the serial port and 
>> shelved the project. I decided to look at it again yesterday and 
>> discovered how it worked... sort of:
>>
>>
>> f=First     \=Snif
>> n=Next      |=Thru
>> r=Reset     l=Level
>> b=Byt(NN+)  ^=57600
>> j=Bit(N+)   `=38400
>> p=BytW/P    ,=19200
>> ~=BitW/P    x=BusLo
>> d=Aux+      $=Scan
>> z=Aux-      *=List
>> &=Aux?      h=Help
>> (=Extend
>> t=Type      "=Iso
>>
>>
>> 420008003BE45B10
>> !,420008003BE45B10
>>
>> I found that at 9600 baud I can press h to see the help, and *, $ 
>> will also return data about the sensor that I have on the network. 
>> Wow! I finally have something to work with, but I can't figure out 
>> where to get the readings from. Pressing p, j or b all give a 1. One 
>> time I saw a B3, but it doesn't seem to be repeatable. It's 179 
>> anyway... my server room rack better not be that temperature!!
>>
>> So, I continued and looked for some MH code to read the serial port 
>> data. I found several examples, but none of them seemed to be for 
>> reading the OW data directly from a serial port. All seemed to read a 
>> dump from an external program - and all from Windows. I'm running Linux.
>>
>> So, I looked a owfs: installed it, configured it the best that I 
>> could figure out and poked around the /run/owfs filesystem...
>>
>> root@avalanche:~# cat /run/owfs/bus.0/10.67C6697351FF/latesttemp
>> 43.1086root@avalanche:~# cat /run/owfs/bus.0/10.67C6697351FF/latesttemp
>> 91.3275root@avalanche:~# cat /run/owfs/bus.0/10.67C6697351FF/latesttemp
>> 14.4802root@avalanche:~# cat /run/owfs/bus.0/10.67C6697351FF/latesttemp
>> 94.4001root@avalanche:~# cat /run/owfs/bus.0/10.67C6697351FF/latesttemp
>> 46.0749root@avalanche:~# cat /run/owfs/bus.0/10.67C6697351FF/latesttemp
>> 90.8667root@avalanche:~# cat /run/owfs/bus.0/10.67C6697351FF/temperature
>> 36.8015root@avalanche:~# cat /run/owfs/bus.0/10.67C6697351FF/temperature
>> 1.73821root@avalanche:~# cat /run/owfs/bus.0/10.67C6697351FF/temperature
>> 31.6712root@avalanche:~# cat /run/owfs/bus.0/10.67C6697351FF/temperature
>> 65.0987root@avalanche:~# cat /run/owfs/bus.0/10.67C6697351FF/temperature
>> 27.7991root@avalanche:~# cat /run/owfs/bus.0/10.67C6697351FF/temperature
>>
>> Every time I checked values, it was something different. Perhaps this 
>> is because I twisted the sensors onto the wires, instead of a more 
>> secure connection?
>>
>> Either way, I'm getting SOMETHING... so I think it's time to ask: how 
>> do YOU gather OW data? Is there a module for MH to tread it directly, 
>> or should we use something external?
>>
>> Thank you all!
>>
>> -- 
>> Best regards,
>> Steve Switzer
>>
>> ---
>> Get world-class business I.T. services and a phone system with awesome features that won't challenge your budget!
>> http://www.sbsROC.com  <http://www.sbsROC.com>
>>
>>
>> ________________________________________________________
>> To unsubscribe from this list, go to:https://lists.sourceforge.net/lists/listinfo/misterhouse-users
>>
>
>
> ________________________________________________________
> To unsubscribe from this list, go to: https://lists.sourceforge.net/lists/listinfo/misterhouse-users
>

________________________________________________________
To unsubscribe from this list, go to: https://lists.sourceforge.net/lists/listinfo/misterhouse-users