Can we keep it to one thread here for this please ? I think the other one makes more sense FWIW.
On Monday, May 18, 2026 at 11:36:23 AM UTC-7 WeatheredScientist wrote: > Dragons indeed! I've gotten a copy of rtldavis working on a MacBook with > the dongle. I now know my neighbor's water usage, which is great, but not > the ISS :-) > The problem I seem to be having, grossly, is either locking onto the ISS > in the first place (though I do seem to handshake at times) and sticking to > it thru the hops, and then getting that feed interpreted into a usable > format. I seem to get stuck with weewx just spitting out simulator data. > > It's tough troubleshooting to me b/c I am using outputs as diagnostics, > and there are "chained layers", in my own words. I wish I could see more > than just a handshake with the ISS signal, but once it does that to have > rtldavis spit out what it is receiving onto the command line. Happy to > start over, just not quite sure how. > > On Saturday, May 16, 2026 at 8:26:21 PM UTC-4 Greg Troxel wrote: > >> WeatheredScientist <[email protected]> writes: >> >> > What I've come to realize is that I have to intercept the radio signal >> from >> > the ISS in order to do what I want with weewx. >> > >> > To that end I've purchased an RTL-SDR v3 dongle, which may or may not >> be >> > DOA (TBD!). But the idea is to use that as my receiver, then decode >> with >> > the rtldavis driver for weewx. >> >> My advice is to build the latest rtl_433 from git and listen on 433.92, >> 315, and 915, or something else depending on what country you are in >> (and hence what the allowed frequencies are). >> >> Also check which librtlsdr you have, but with a v3 (vs v4) it should be >> ok. >> >> You should see lots of things decoded, that you didn't know existed, >> like temperature sensors, car TPMS and more. >> >> Only when you can decode random other stuff should you try to listen to >> your ISS. >> >> >> The Davis RF protocol is vastly more complicated than everything else, >> and needs synchronization, and you need to select the region-specific >> hopping patterns. I think it takes a while to figure out where in the >> cycle the pattern is and can then follow it. I haven't done this; I >> just know there be dragons. >> >> >> (You could also consider >> https://www.meteobridge.com/wiki/index.php?title=Meteobridge_PRO2 >> which seems to mostly work but has awkward interfaces if what you want >> is weewx. It's also real money compared to a RTL-SDR dongle.) >> > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/weewx-user/4e9357ac-5da6-4ba9-a834-13bcf5ee7957n%40googlegroups.com.
