Cumulus Support

Here's a P.S. FYI Easyweather [Logger] and Cumulus Data-log are both set to 15 minutes. S.

Do you have the 'calculate 10-min wind average' option ticked?

Yes!

Ah, well, that would do it

Certainly for data from the logger, anyway. You have Cumulus calculating 10-minute averages of data points 15 minutes apart. Is that enough explanation?

Errrr. Almost! Do you have any recommended logging frequencies for the base station and Cumulus? Or is it simply enough to 'uncheck' the 'Calculate 10 min wind average'?
Sorry to be a bit thick here.
Steve EA5FJF

Basically, the two figures are coming out the same because there is only one reading inside any given 10 minute window to calculate an average from. Cumulus uses the gust figure to calculate the average, so the gust and 10-minute average figures will be identical. Cumulus probably should use the station 'speed' figure (or 'wind' or whatever it calls it) to calculate the 10-minute average, but at the time I wrote the code, I had no idea how the station calculated the two values it supplies. I still don't know exactly what the gust figure is. In Cumulus 2 I may change to use the other figure, or maybe offer it as an option.

Personally, I would set the station logger to its most frequent interval: 5 minutes. That still gives you about two weeks capacity. And set Cumulus the same. But even then, when processing data from the logger, you still only have two readings to calculate a 10-minute average from, so it's not a great average. It works better with live data. If you untick the box it will use the station 48-second average instead of calculating one.

That's probably just muddied the waters further

No. That's fine. Nothing muddied. I guess I was expecting an 'average' to be taken from the ten second updates on Cumulus. In the meantime I've 'unticked' that 'Calculate 10 min wind average' box, and the 'Recent Extremes' for wind and gust are different!! So I'm a happy bunny.
I'm thinking of you up there in the Scotish Islands, and assume you 'work from home' in the software trade. All I can say is 'Well done!' with Cumulus. I've tried Cumulus 2. It necessitated a large Windows SQL program download, which failed to instal properly. But I will persevere! Greetings from sunny Spain! Steve EA5FJF

EA5FJF wrote:No. That's fine. Nothing muddied. I guess I was expecting an 'average' to be taken from the ten second updates on Cumulus.

During 'live' running, it is. It's only when processing 'missed' data from the logger at start up that the calculation is not so good.

I've tried Cumulus 2. It necessitated a large Windows SQL program download, which failed to instal properly. But I will persevere!

Yes, sorry about that, it was an experiment that didn't really work. I'll have another build available soon (hopefully today) which doesn't use MS SQL Server.