[Xastir] Weather Stations

Dj Merrill xastir at deej.net
Sat Oct 27 14:13:06 PDT 2018


I think I have this working, maybe. The APRS extension to weewx creates 
a text file with a weather packet, such as:

/272050z4355.97N/06956.34W_031/003g006t000r000P023h37b06495WX-Topsham,Maine

I have a script that reads that file and sends the packet with:

xastir_udp_client localhost 2023 N1JOV-7 (passcode) -to_rf -to_inet 
"/272050z4355.97N/06956.34W_031/003g006t000r000P023h37b06495WX-Topsham,Maine"

where (passcode) is my 4 digit APRS passcode.

Within Xastir I can see the packets being transmitted via the RF link, 
and can view them from another APRS station over the RF link.

However, I (perhaps incorrectly) assumed that the weather data would 
show up under the "weather" tab on aprs.fi:
https://aprs.fi/weather/a/N1JOV-7

I don't see anything, and I also don't see the "raw" weather packets on 
aprs.fi either.

Am I misunderstanding how weather data works, or is it just not doing 
what I expected?

-Dj


On 10/1/2018 9:38 PM, Dj Merrill wrote:
> I think I have figured out one possibility that I will test once I 
> have some time.
>
> There is a WeeWX extension to generate APRS packets and write them to 
> a file:
> https://github.com/cavedon/weewx-aprs
>
> If I can get that to work, I can write a simple bash script that will 
> read that file, and use the Xastir command "xastir_udp_client" to send 
> the data to either the RF port, the Internet, or both. Call the script 
> from a cron job that runs as often as needed.
>
> I should be able to do some simple checks to ensure that the same data 
> isn't sent twice (ie, if the file hasn't been updated, don't do 
> anything).
>
> Assuming all of that works, I'll be able to use WeeWX to send the 
> weather data to the Internet servers directly, and to generate the 
> html files to be able to view the weather station data directly, then 
> enable the above script if I want to send the weather data over RF 
> using Xastir.
>
> I'll let you know how it goes.
>
> -Dj
>



More information about the Xastir mailing list