Ecowitt HP2551 missing data

access-mdb · Post by **access-mdb** » Sun 01 May 2022 7:05 am

My setup is on a PC that I normally keep running. However, when I go on holiday later this month I don't want to leave it running, so I was very happy when Mark fixed CMX to catch up after a stoppage. I tried doing this this morning by switching off for 50 minutes or so. When I restarted the data was missing from the May log file. So the question is, why is it missing? Have I done something wrong? Version running is Release 3.15.3 - build 3173. The console was running and the data is on the Ecowitt website.Attached is the diagnostic log

mcrossley · Post by **mcrossley** » Sun 01 May 2022 9:34 am

Cumulus asked the Ecowitt servers for all data at 5 minute intervals between...
start_date=2022-05-01 06:36
end_date=2022-05-01 07:17

And the answer was...
"msg":"success", "data":[]

No data!

Can you double check your MAC address, and check there is data for that period showing on ecowitt.net?

access-mdb · Post by **access-mdb** » Sun 01 May 2022 1:32 pm

Well I wondered if it was because of my PC being BST and the console being UTC. But there's no data missing on Ecowitt either between 05:40 and 06:00 or 06:40 and 07:00. The PC was off between 0640 and 0700 BST.The MAC address on the Ecowitt.net and the one on CMX are the same, so I assume that's correct.

mcrossley · Post by **mcrossley** » Sun 01 May 2022 4:39 pm

If you are willing to send me your API keys in a private message, I can take a look and see if there is a time issue.

Ecowitt choose not to use UTC timestamps for their API, so what they mean is not really defined, but if you have data covering both time periods then something is (or was) wrong somewhere!

access-mdb · Post by **access-mdb** » Mon 02 May 2022 9:09 pm

Hi Mark, I sent a DM but there's nothing in the sent box, so has it arrived?

Post by **freddie** » Mon 02 May 2022 10:16 pm

access-mdb wrote: ↑Mon 02 May 2022 9:09 pm Hi Mark, I sent a DM but there's nothing in the sent box, so has it arrived?

That's normal phpBB behaviour - it stays in your outbox until the recipient has read the message (strictly, when the recipient accesses their inbox). Only then will it move to the sent box.

access-mdb · Post by **access-mdb** » Tue 03 May 2022 7:09 am

Thanks Freddie - but there's nothing in the outbox either.

Post by **freddie** » Tue 03 May 2022 7:31 am

access-mdb wrote: ↑Tue 03 May 2022 7:09 am Thanks Freddie - but there's nothing in the outbox either.

Ah okay, I didn't realise that. Have you successfully sent a PM before now?

mcrossley · Post by **mcrossley** » Tue 03 May 2022 8:19 am

Nothing received yet.

access-mdb · Post by **access-mdb** » Tue 03 May 2022 9:40 am

I have now and this time there's a message in the outbox. Not sure what happened first time.
Freddie, this was my first attempt.

mcrossley · Post by **mcrossley** » Tue 03 May 2022 5:00 pm

Thanks, I'll take a look later tonight...

mcrossley · Post by **mcrossley** » Wed 04 May 2022 8:10 am

A bit later than I expected, but I took a look this morning.

I resubmitted your original request with start and end dates of...

start_date=2022-05-01 06:36
end_date=2022-05-01 07:17

And now I do get data back from the Ecowitt servers. However the data starts on 2022-05-01 07:40 BST, and ends 2022-05-01 08:10 BST.

So indeed the issue is your station and CMX running in different time zones.

The crazy thing is Ecowitt return all times in UTC, but they want the requests in the station time zone.

When using date-times in an API the answer is always "use UTC, now what's the question?"

access-mdb · Post by **access-mdb** » Wed 04 May 2022 9:39 am

Thanks Mark, at least we know now. I will have to put my PC into UTC all year mode. I only use it as a webserver (local for just me, don't ask) and also CMX. I have OneDrive on it, with all files kept on it. I doubt that will cause an issue. I also copy all those OneDrive files outside OneDrive - part of my backup procedures - belts and braces, just in case.
I'll change to UTC (after stopping CMX), then use the relevant backup to start from before the outage. I'll let you know the outcome!
Longer term, get a Raspberry Pi and use that for CMX and as my webserver. Freddie, if I get there I don't doubt I'll be asking you for help!

Post by **freddie** » Wed 04 May 2022 10:01 am

access-mdb wrote: ↑Wed 04 May 2022 9:39 am Thanks Mark, at least we know now. I will have to put my PC into UTC all year mode. I only use it as a webserver (local for just me, don't ask) and also CMX. I have OneDrive on it, with all files kept on it. I doubt that will cause an issue. I also copy all those OneDrive files outside OneDrive - part of my backup procedures - belts and braces, just in case.
I'll change to UTC (after stopping CMX), then use the relevant backup to start from before the outage. I'll let you know the outcome!
Longer term, get a Raspberry Pi and use that for CMX and as my webserver. Freddie, if I get there I don't doubt I'll be asking you for help!

Happy to help with anything Linux/Apache--related. I'm glad you got to the bottom of this problem.

access-mdb · Post by **access-mdb** » Thu 05 May 2022 1:53 pm

OK, I have bit the bullet and changed the PC to UTC. I stopped CMX, made a backup copy of the current data folder (just in case), copied the relevant backup over, removed BST then restarted CMX. The missing data has been restored.
At least now, we all know that the device that CMX getting HP2551 missing data needs to be in on UTC all year round.
Thanks for all the help.

Cumulus Support

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