I don't know if this makes sense or not, I simply described my attempts. tcpdump is unlikely to lie. But fine. Let's assume I don't have the ability (or skill) to use the interceptor driver. Are there other options for getting data from the station?
It seems to me that I have two ways - direct and indirect. 1. Direct I found information about the weewx-sdr controller. From the description it seems to me that it can help me in my situation. It works well, because I have an SDR dongle that I use to receive ADS-B signals. 2 Indirect Downloading the data sent by the station to the WU and uploading it to Weewx. I repeat the question from the previous message - does Weewx allow import on the fly from WU, or only from manually fed files? niedziela, 23 marca 2025 o 02:35:36 UTC+1 vince napisał(a): > Not sure your description makes much sense. There has to be some traffic > from the station to an ip off network. I’d expect ntp and dns traffic as > well. > On Saturday, March 22, 2025 at 12:48:59 PM UTC-7 Tomasz Lewicki wrote: > >> Today I had the opportunity to face the Garni 1025 station. >> Unfortunately, the issue is much more complex than it might seem at first. >> The universal driver “interceptor” is powerless in this case. The station >> communicates with the environment in a strange way. It turns out that the >> panel with the display does not connect directly to the local network as a >> device with an IP address in the range given by the DHCP server of the home >> router, but probably forms a kind of bridge between itself and the router. >> >> The way I came to this was that after connecting the Raspberry Pi with >> Weewx installed, I scanned the local network with my smartphone and found >> no device in it that could be a Garni panel. From the instructions, I >> learned that to configure the panel, you need to press the appropriate >> button on the case and enter AP mode. Then you can enter the default >> address 192.168.1.1 with a browser and there enter the SSID of your home >> network and the password for it. I managed to connect the laptop to the >> network created by the Garni panel and started sniffing on the network >> traffic. Unfortunately, tcpdump didn't show anything that would give any >> meaningful clues. The only packets were sent by the Garni panel to my >> laptop. I couldn't see any packets that Garni was routing to the router, >> yet it must be transmitting something if data is being sent to the WU, >> right? >> >> Do you see any way that I could still try? >> >> PS. Does Weewx allow you to import data from WU in "quasi real time"? >> What I mean is, can I download data from WU, for example, every 5-10 >> minutes and feed it to Weewx so that it creates charts locally. >> >> niedziela, 16 marca 2025 o 10:02:32 UTC+1 Tomasz Lewicki napisał(a): >> >>> Thank you all for the helpful replies. >>> >>> As I said, the station is out of my reach so I hoped to prepare "dry >>> run" and set up Weewx in my home environment and then just connect in in >>> target network, changing only necassary things (WiFi network and so on). If >>> it is not possible, I have to use tcpdump "in situ", where Garni works. But >>> - replying to Reiner Lang's suggestion - Garni sends the data to WU >>> instantly; you can check it here -> >>> https://www.wunderground.com/dashboard/pws/IKOWAL30 >>> >>> In the meantime I got a photo of manual page from the owner of the >>> station (Garni doesn't share the manuals on its website - it's strange) and >>> then I was almost sure that Garni uses Weathercloud protocol because setup >>> allows setting my own server (if someone is curious, here is a photo -> >>> http://stalker.udl.pl/temp/garni1025.jpeg). So I looked into >>> Weathercloud website and can confirm that Garni 1025 uses Weathercloud >>> protocol -> https://weathercloud.net/en/compatible-devices List >>> contains plenty of manufacturers which I know. Rainer Lang hinted that >>> manufacturer is CCL (shame to say it but I did not know this company). I >>> found quite old "wcloud" driver from Matthew Wall ( >>> https://github.com/matthewwall/weewx-wcloud) but if I understand it >>> good, it allows only for uploading the data from Weewx to Weathercloud >>> server, not downloading it from weather station. >>> >>> So maybe the clones which Weewx supports are using some "standard" >>> protocol (whatever means "standard" when talking about PWS) and I can use >>> some known driver here...? >>> >>> niedziela, 16 marca 2025 o 02:55:59 UTC+1 vince napisał(a): >>> >>>> Can you perhaps just listen for all tcp traffic and not specify the src >>>> address and see what is on your network ? >>>> >>>> I’d think you might try to listen for tcp src 192.168.0.0/24 dst not >>>> 192.168.0.0/24 and not specify any port. >>>> >>>> Or listen for all tcp traffic for at least 10 minutes and capture to a >>>> file, then transfer the pcap file back to your computer to analyze in the >>>> wireshark/ethereal gui later. If you could post a pcap file somewhere I’m >>>> sure folks will see if they can help determine the correct settings. >>>> >>>> On Saturday, March 15, 2025 at 6:15:42 PM UTC-7 matthew wall wrote: >>>> >>>>> tomasz, >>>>> >>>>> you are correct to first use tcpdump. once you see data using >>>>> tcpdump, then you can experiment with interceptor to get the data into >>>>> weewx. if the station can successfully post to wunderground, then the >>>>> interceptor *should* be able to capture the data. but you should first >>>>> use >>>>> tcpdump to figure out the settings necessary to capture data. >>>>> >>>>> is it possible to adjust the destination in the weather station? if >>>>> so, you could tell the station to send to the computer running weewx, >>>>> instead of wunderground. but still use the wunderground protocol. >>>>> >>>>> can you control the dns entries on the network? if so, make >>>>> weatherstation.wunderground.com resolve to the computer running >>>>> weewx, then run interceptor in listen mode. if you already run a web >>>>> server on port 80 then you would have to make interceptor listen on a >>>>> port >>>>> other than 80, then adjust the web server configuration to send traffic >>>>> for >>>>> /weatherstation/updateweatherstation.php to that port. or do it with >>>>> firewall rules. >>>>> >>>>> does your network switch support port mirroring? if so, mirror the >>>>> port that the weather station uses and make interceptor listen on the >>>>> mirrored port. >>>>> >>>>> or if the station is wifi, make interceptor listen on an interface >>>>> that can see the wifi traffic. >>>>> >>>>> but first use tcpdump in one of these configurations to ensure that >>>>> you can see the data from the station. >>>>> >>>>> m >>>>> >>>>> -- You received this message because you are subscribed to the Google Groups "weewx-user" group. 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