Telldus weather station supported?

[anderser]

Anyone know if this Telldus Weather Station is supported? https://www.kjell.com/no/produkter/hjem-fritid/termometer-og-hygrometere/tradlose-termometere/telldus-tradlos-vaerstasjon-p51557

I have Telldus temperature sensors that work fine, but wonder if all the features of this weather station are supported by RTL433 since it is not on the supported devices list yet.

[anderser]

For future reference: this weather station worked, but was reported as Cotech-367959

model     : Cotech-367959 ID        : 29
Battery   : 1            Temperature: 68.2 F       Humidity  : 42 %          Rain      : 0.9 mm        Wind direction: 23        Wind      : 0.0 m/s
Gust      : 0.3 m/s      Light Intensity: 69627 lux UV Index  : 251          Integrity : CRC

[zuckschwerdt]

What's the product number of the outdoor unit? I'll then add that to the docs of the Cotech decoder.

[anderser]

The outdoor unit is a Telldus Weather Station. Item: 14759. Type: FT021T

[anderser]

BTW: The UV index is as you can see in output above reported as 251 which does not fit with the Cotech decoder (- P : 8 bit: UV index (1-15)). And the rain sensor is reporting a lot of rain even though the sensor is inside for now. So there is probably something which is a bit off compared to the Cotech.

[zuckschwerdt]

Preamble, CRC init value, and length are pretty unique here, so it is likely a somewhat modified version, not a completly different thing?
If you discover the correct decoding for this we can add that. Would be best if there was a way to distinguish both types.
The "subtype" (A) and the flags (L) might be hints. https://github.com/merbanan/rtl_433/blob/master/src/devices/cotech_36_7959.c#L88

[anderser]

I am not sure how to proceed with this as my C and radio knowledge are non existant. But I can try to dump some data if that helps. Here is an output for the weather station using rtl_433 -A

Detected OOK package	2021-03-03 12:48:09
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
time      : 2021-03-03 12:48:09
model     : Cotech-367959 ID        : 29
Battery   : 1            Temperature: 41.4 F       Humidity  : 91 %          Rain      : 15.0 mm       Wind direction: 346       Wind      : 1.2 m/s       Gust      : 1.3 m/s
Light Intensity: 69627 lux                         UV Index  : 251           Integrity : CRC
Analyzing pulses...
Total count:  101,  width: 124.05 ms		(31013 S)
Pulse width distribution:
 [ 0] count:   75,  width:  500 us [476;532]	( 125 S)
 [ 1] count:   26,  width:  992 us [988;1000]	( 248 S)
Gap width distribution:
 [ 0] count:   73,  width:  472 us [448;500]	( 118 S)
 [ 1] count:   27,  width:  960 us [956;972]	( 240 S)
Pulse period distribution:
 [ 0] count:   60,  width:  976 us [976;988]	( 244 S)
 [ 1] count:   27,  width: 1464 us [1444;1492]	( 366 S)
 [ 2] count:   13,  width: 1952 us [1948;1960]	( 488 S)
Pulse timing distribution:
 [ 0] count:  148,  width:  488 us [448;532]	( 122 S)
 [ 1] count:   53,  width:  976 us [956;1000]	( 244 S)
 [ 2] count:    1,  width: 10004 us [10004;10004]	(2501 S)
Level estimates [high, low]:  15933,     20
RSSI: -0.1 dB SNR: 29.0 dB Noise: -29.1 dB
Frequency offsets [F1, F2]:   -4628,      0	(-17.7 kHz, +0.0 kHz)
Guessing modulation: Manchester coding
view at https://triq.org/pdv/#AAB10301E803D02714808080808080808081919180908180808080908081919180808080809081808080808090819191908191808080808080808091809190819180808080908180919080818091908190808080808080808080808080808190808080808081908190808191808255
Attempting demodulation... short_width: 500, long_width: 0, reset_limit: 976, sync_width: 0
Use a flex decoder with -X 'n=name,m=OOK_MC_ZEROBIT,s=500,l=0,r=976'
pulse_demod_manchester_zerobit(): Analyzer Device
bitbuffer:: Number of rows: 1 
[00] {127} 00 29 83 a8 18 1a b4 01 2d 06 5c b7 ff f7 f6 e8 

[anderser]

Here are some captures using rtl_433 -R 153 -S all telldus_samples.zip

[anderser]

The rain sensor showed accumulated total since device start, so that works. Lux and UV does not change at all, so they are either not reported or wrong decoding. The panel that comes with the weather station shows some symbols that probably needs UV/lux as input, so I assume they are sent.

[kasbert]

Telldus weather station outdoor unit is WeatherRack2.
There is a fork of this repo:
https://github.com/switchdoclabs/rtl_433

Maybe something could be merged from there ?

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
time      : 2021-10-22 09:08:37
model     : SwitchDoc Labs FT020T AIO              Device    : 12            Serial Number: 0
Battery Low: 0           Ave Wind Speed: 10        Gust      : 17            Wind Direction: 193       Cum Rain  : 4167
Temperature: 814         TemperatureC: 5.000       Humidity  : 93            Light     : 69627         UV Index  : 251
Integrity : CRC

There is also an indoor unit, that contains a receiver and a display and possibly sends some data, too.

[zuckschwerdt]

They share the same licence, that should be ok. Some refactoring will be needed and they don't follow our naming scheme though.
I guess we could pull all changes in a branch, throw out unrelated commits, then clean up and merge.

[zuckschwerdt]

I've split, cleaned, squashed and finally rebased the changes and put them at https://github.com/merbanan/rtl_433/tree/switchdoclabs
View the commits at https://github.com/merbanan/rtl_433/commits/switchdoclabs
I have not touched the contents, those will need some changes yet.

[merbanan]

I suggest we pull in the relevant decoder when we get samples so we can test and verify the code.

[merbanan]

@kasbert can you supply some signal samples, then we can merge the decoder to the main tree?

[kasbert]

@merbanan
telldus2.dmp.gz
It is pretty dull data. Only a slight change in temperature

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
time      : @10.668968s
model     : SwitchDoc Labs FT020T AIO              Device    : 12            Serial Number: 0
Battery Low: 0           Ave Wind Speed: 14        Gust      : 20            Wind Direction: 126       Cum Rain  : 4197
Temperature: 801         Humidity  : 93            Light     : 69627         UV Index  : 251           Integrity : CRC
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
time      : @26.669373s
model     : SwitchDoc Labs FT020T AIO              Device    : 12            Serial Number: 0
Battery Low: 0           Ave Wind Speed: 8         Gust      : 13            Wind Direction: 48        Cum Rain  : 4197
Temperature: 800         Humidity  : 93            Light     : 69627         UV Index  : 251           Integrity : CRC
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Temperature in celsius would be (((801-400)/10)-32)/1.8 = 4.8
I have no idea if the Light and UV index makes any sense