To SDR or not to SDR, that is the question

[Bruce Butkus]

Hey All, 

Ive got 3 weather stations reporting, a WS2902, and 2x WS2065, with both report the same 8x WH31 units, plus their own temps. 

My end goal is to run a Pi with its own display to push a webpage/ interface that displays the current readings, along with data backup for power / internet outages.

 

Got my Pi, and SDR as this is where i learned about the Weewx, and data backup. 

Im trying to set up the RTL-SDR + RTL_433 to pick up the radio signals of the outdoor array + the 8 indoor units as a backup for internet or power outages. As such I realized that the WS2902 does NOT report barometric pressure over radio. this probably isnt a big deal unless the power / service is out for a long time, its not a rapidly changing as say wind or rain. and I could pick up a WH32B t/h/b sensor and replace or add it to the array so i can get everything. 

But I thought, to be complete, if I used the other driver 'interceptor' to pull the data from the network,  well that opens up the other 2 devices 'indoor' temps as well,  and i could pick up everything, without running the SDR.. 

 

the question is, does that seem reasonable. the console for the 2902 would then need to be on battery backup as well, not really an issue, as the wifi already is on battery. but if the wifi goes down I get no data, where as with the SDR, I could still get the radio signals from the devices running on battery. Plus i already have the SDR and its half configured for weewx already, just finishing up the sensor mapping. 

Im running the various consoles on wifi and connected to one wifi router, the same my pi is connected to wifi on. I would also still like be pushing data to ambientweather.net and wunderground obviously. 

kinda just looking for advice. I think the easiest thing is finish up the SDR, and add a WH32b at some point to do barometric readings and be done. 

[G Hammer]

You'll need a WS-1000-BTH (WH25B) for indoor temp and barometer as the 32B is not supported yet.

I had less problem using this method than the Interceptor. Router just didn't play well with the consoles after inserting the routing statements.

[Bruce Butkus]

oh - nice catch, thanks! Sounds like ill just stick to the SDR route. everything i want is really on batteries anyway. plus its 'cooler' to have it pinging the radio signals and not messing with my already complicated wifi / internet. 

[Tolip Wen]

You can use a BMP 180 or a BMP 280 on the Pi for temp and pressure with 4 wires total. a few tutorials out there. I got mine from Adafruit.

[Bruce Butkus]

I just picked up the WTH1000 - ill either add it as an extra channel or replace one of my 8 with it. 

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