that is correct. BUt you really should not see much difference between polling values if you are polling at 2.5 seconds!! But the value which is archived will be the average value over the 3 minute archive period.
If you are displaying the LOOP packets - the values written to the database are in the REC packet - which should occur once every 3 minutes - and they are ALL averaged values for values received in the LOOP packets of the interval - pressure, temperature, humidity etc etc On Tuesday, 23 July 2019 14:32:17 UTC+3, Danie Cillie wrote: > > The archive period you refer to, is that the value set in the weewx.conf > file? I have reduced that to 240 or 3 minutes. If I understand you > correctly, the average is over the 3 minute period until the next write is > done to the database. > If I run weewxd directly, (sudo weewxd weewx.conf) the LOOP values are > correct. > Then I assume the values read (poll_interval is 2.5 seconds) in the 3 > minute period is averaged and written to the database, is that correct? > I'll monitor the readings over a few days to see if I can make any sense > out of this. > > On Tuesday, 23 July 2019 11:45:46 UTC+2, Danie Cillie wrote: >> >> It will stay at a certain value for example 51% for a long time even >> though the loop value has changed drastically. Both the loop and archive >> record values are correct when displayed on the terminal but that is not >> what is written to the database. >> How does one determine the archive period over which the values are >> averaged? >> >> On Tuesday, 23 July 2019 11:33:33 UTC+2, Andrew Milner wrote: >>> >>> how do you know it is 'stuck'?? the archived value is the AVERAGE of >>> readings received during the archive period. What values are displayed >>> that you say are correct - the loop value or the archive record value?? >>> Remember that humidity does not change very quickly. >>> >>> On Tuesday, 23 July 2019 12:15:20 UTC+3, Danie Cillie wrote: >>>> >>>> Morning, >>>> >>>> I use a Raspberry Pi with the GroveWeatherRack and sensors and weewx. >>>> >>>> The grovePi driver sends the data directly to weewx. >>>> >>>> The LOOP data and the archive data as printed on the terminal when >>>> weewxd runs is correct and updates correctly, but the humidity data is >>>> stored correctly the first time in the database and then gets stuck. >>>> Sometimes after a long time (hours) it changes to a new value and sticks >>>> to >>>> that again. >>>> >>>> I can not understand why the data is read and displayed correctly but >>>> not stored in the database. >>>> >>>> The data on this page illustrates what the problem is >>>> https://www.pwsweather.com/obs/IBLUERID2.html >>>> >>>> Please find the config file and log file attached. >>>> >>>> Any suggestions appreciated. >>>> >>> -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/c8dacece-4bde-4b42-bf66-d4e78ebfee8b%40googlegroups.com.
