You're probably right about the nulls, but you didn't supply a log, nor a
sample plot, so it's hard to make more than an educated guess.

Let's check the database. I'm going to assume that the outside temperature
(outTemp) is showing dots. Change as necessary.

*sqlite3 /var/lib/weewx/weewx_atlas.sdb*
sqlite> *SELECT dateTime,
DATETIME(dateTime,'unixepoch','localtime'),outTemp FROM archive ORDER BY
dateTime DESC LIMIT 20;*

This will show the last 20 archive records. See how many nulls are in
there. To take it to the next step, we'll need more information.

-tk

On Thu, Dec 1, 2022 at 7:26 PM William Garber <[email protected]>
wrote:

> any help please :-)
> I tried making gap_fraction = 0.3 (not 0.03) and increased
> archive_interval = 300.
> *QUESTION: Could it be that I just am getting too  many nulls in the
> database?*
>
> My weather station is an Acurite Atlas using SDR driver modified for
> indoor temp/humidity/pressure from an arduino.  The weewx server is on a
> raspberry pi hooked up to a usb hub.
> The usb hub is connected to the RTL-SDR radio receiver dongle to receive
> the Acurite Atlas packets.  The usb hub is also connected to the arduino.
> The modified SDR driver has three streams, stdin/stdout from the rtl_433
> back-end to RTL-SDR plus ttyACM0 serial over usb connection to the
> arduino.  The SDR driver reads these ports with a class called AsyncInput
> which has one instantiation per stream.  Each AsyncInput runs in a thread.
>
> *QUESTION It should definitely be drawing lines not points based on the
> weewx.conf attached and the skin.conf attached as far as I can tell.*
>
> The Acurite Atlas send a sequence of about three incomplete packets to
> make a complete set of data plus the data from the arduino.
> *QUESTION:  how do incomplete packets get combined?*
>
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