"RobH"  wrote in message
news:h19cl0Fel6mU1@mid.individual.net...
> On 22/10/2019 20:57, NY wrote:
>> "RobH"  wrote in message
>> news:h194blFd0tiU1@mid.individual.net...
>>> The other weather, program, is all set ready to run when I make the
>>> decision to disconnect the ubuntu machine which currently runs the 2
>>> programs.
>>
>> What weather program do you use? I run Cumulus MX on Raspbian on my Pi
>> 3B+ and it does a very good job; in my case, I migrated from Windows to
>> Pi for the weather station (and the PVR software - TVHeadend), to reduce
>> the power consumption for applications that had to be run 24/7.
>
> I use the same weather program, CumulusMX, and it runs great

That will run on Raspbian (using the Mono package) and doesn't need Ubuntu.
However the other package that you use (was it a CCTV package) may need
Ubuntu, hence your need to get Ubuntu working on the Pi 4.


I used to use the older version of Cumulus on my Windows PC and it suffered
from being able to read the very recent readings from the data-logger on my
Davis weather station if Cumulus was stopped and then restarted for some
reason (eg power cut). As long as the PC rebooted within the 10-minute
window of time between one logged reading and the next, I was fine. If the
delay was longer, I'd get some historical readings but often the most recent
ones would be missing and I'd have to hand-edit the log file so there
weren't gaps.

Cumulus MX on the Pi seems to be virtually bulletproof in this respect -
it's very rare to get missing readings. I do occasionally get readings that
jump back in time half an hour or so, but that's because the real-time clock
in the Pi is a bit hit-and-miss following a reboot, until the clock has had
chance to resync with a master time source (NTP) on the web. I've got wise
to that: after any power cut, I always check the clock and set it manually
with the "date" command if it's wrong, so it's much closer to the correct
time until a proper NTP resync can occur. It's only really a problem if the
router takes a long time to connect and isn't ready and waiting for when the
Pi calls for a time sync.


If you need to port the log files from one computer to another, it's as
simple as copying the contents of the ~/CumulusMX/data directory from one
computer to another, preferably with Cumulus not running.

--- SoupGate-Win32 v1.05