Greg,
Awesome! ?Thanks, that is something I can Siri with. That makes great sense, no humidity - not a good packet! ?I¡¯ll chew on this and get to work.
Thanks again!
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On Sep 28, 2021, at 4:39 PM, Greg D <ko6th.greg@...> wrote:
?
Found the cwxn.py code that I hacked...? It's an older version ( #
$Id: cwxn.py 1280 2015-03-01 17:01:56Z mwall $), but perhaps
still relevant.? Both changes - null records and format change -
were all in the write_data routine, at the bottom of the source
file.? Warning:? this was done before I knew anything about writing
in Python, so there will be better / cleaner ways to do this.
Basically, I noticed that all of the bad records had a zero value
for humidity in common.? Since a truly zero humidity is effectively
impossible, I used that as the key for skipping writing the data.?
The formatting issue was that humidity wasn't being handled right as
a 2-digit number, so my D74 wasn't decoding it properly.?
I just noticed that a true 100% humidity would get rejected too, as
it is represented as zero in the output, so my two fixes are kind of
broken when taken together.? {sigh}? We hardly ever get 100%
humidity here, so it hasn't exactly been a problem.? Wish it were
(we need the rain!).? With those excuses, here's the snippet of
code:
?def write_data(self, data):
??????? fields = []
??????? fields.append("%03d" % int(data['windDir']))
??????? fields.append("/%03d" % int(data['windSpeed']))
??????? fields.append("g%03d" % int(data['windGust']))
??????? fields.append("t%03d" % int(data['outTemp']))
??????? fields.append("r%03d" % int(data['hourRain'] * 100))
??????? fields.append("p%03d" % int(data['rain24'] * 100))
??????? fields.append("P%03d" % int(data['dayRain'] * 100))
??????? if data['outHumidity'] < 0 or 100 <=
data['outHumidity']:
??????????? data['outHumidity'] = 0
??????? # 2-15-2019 changed humidity format to 2 digits, per
spec and for Kenwood D74 compatibility
??????? fields.append("h%02d" % int(data['outHumidity']))
??????? fields.append("b%05d" % int(data['barometer'] * 10))
??????? if data['outHumidity'] > 0:
??? ??? with open(self.filename, 'w') as f:
??????????????? f.write(time.strftime("%b %d %Y %H:%M\n",
??? ??? ??? time.localtime(data['dateTime'])))
??????????????? f.write(''.join(fields))
??????????????? f.write("\n")
Hope this helps, and apologies for the kludge,
Greg? KO6TH
J K via groups.io wrote:
Hello,
Yes, all the logs look clean. ? I looked at all the syslogs,
messages, kernel messages, etc, and nothing stands out. Sure, I
wouldn¡¯t mind liking at your .py if you have it to see how you
blocked the ones that didn¡¯t decode properly. Roughly half of
the writes to wxnow aren¡¯t decoding properly, leaving 0¡¯s as
values, which is causing a ¡°zigsaw¡± chart pattern. ?I¡¯m using
Weewx 4.4, cwxn 0.6, and an Acurite 02064. ?Everything decodes
properly for my weewx page, WU, CWOPS, etc, just doesn¡¯t get
written correctly as wxnow.txt half the time by cwxn. ?I double
and triple checked to make sure it wasn¡¯t from sharing a
directory, trying both samba and nfs, but the share is fine,
it¡¯s just not writing correctly half the time which I can
monitor locally to the actual directory wxnow.txt gets saved to
my cwxn. ?Thought for a second maybe it was just the RPi1B that
weewx/cwxn is on just isn¡¯t fast enough, but it should be (?).
?The DireWolf and the radio itself is running on a RPi4(8GB), so
that obviously fine. ?It¡¯s not being used really for anything
else (yet), but one the APRS stuff is fully working, probably
will use it as a SDR server too with a RTL-SDR V3, Ham-It-Up
upconverter, etc. ?Have another RPi4 (4GB) with 10¡± touchscreen
that I mainly use as a portable device to run CubicSDR, Xastir,
etc. ?If weewx/cwxn really needs more resources, have a few
extra RPi3B+¡¯s nor doing much that could be used. ?I just
thought since I had a RPi1B still sitting around (first RPi I
got), it¡¯s be an ok fit. ?Have more RPi¡¯s total now than I can
remember and count, lll. ?Using them for all sorts of things:
Kodi/Retropie for each TV, WX, ADS-B, a few AllStar nodes, SDR,
PiHole, Printer server, DNS/email servers, bunch of mmdvm¡¯s,
etc, etc. ?
Just at a loft why cwxn isn¡¯t decoding half the time, so
sure, if your .py is conveniently by, wouldn¡¯t mind taking a
look. ?Maybe cwxn just doesn¡¯t like certain Acurites (?). ?No
idea, but weewx is running great. ?I have two receivers/displays
for the sensor, one sends to MyAcurite and other is fir weewx.
Thanks!
11 Max Pro
?With my Acurite station, I had to filter out
(not write to wxnow.txt) the bad records. I tested for
humidity=0 as the indicator. I also fixed a small formatting
bug with something else, where the telemetry wouldn't decode
properly on my Kenwood TH-D74. I forget what it was, though.
Possibly humidity of 100% or something like that. The field
didn't fit.
I can probably find the source file, if needed. Let me know.
Greg KO6TH
On September 27, 2021 12:34:06 PM
PDT, Travis Bully <tbully@...> wrote:
How do your Weewx logs (in debug) look??
It's been awhile since I've looked at the code but I
think all the plugin does is query the database for
the last readings from your weather station.? I'm
wondering if you're not getting consistent data from
your sensors.
I¡¯ve tried
everything I could think of and still getting charts
that look like a zigsaw.? I¡¯m wondering now if it
just isn¡¯t creating the wxnow file fast enough.?
Using just my original RPi1B for weewx since I
thought it would be an ok fit as didn¡¯t anticipate
it really needing a lot of resources.? I have a few
RPi3B+¡¯s I guess could switch it to one of them and
have a ton of RPi0W¡¯s, but it doesn¡¯t seem like it
would need to much resource to just run weewx and
cwnx (?).? That¡¯s the only thing I can thing of
trying now.
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