Tom, Thank you. It gives me some hope that the time warp will not be an issue with the new system. The old used a Raspberry PI 3B with an added clock and the new is a RP5 with built-in clock. I do use a battery backup and have not noticed any correlation to voltage drops and the date mix-up. Should have some time in the next couple weeks to load the software and begin transitioning the database.
Thanks, Pat On Friday, May 10, 2024 at 4:36:09 PM UTC-4 Tom Keffer wrote: > I have never seen the Vantage emit a bad date. What does happen is either > > 1. The computer lacks a clock, so it synchronizes the Vantage to the wrong > time. There is a check in WeeWX to avoid starting up with a clock that's > really off, but the best protection is to install a real-time clock in the > computer. > > 2. The logger memory gets corrupted. This is pretty rare, but seems to be > triggered by power outages (although not always). The symptom is that WeeWX > fails to download any new data, so your webpage doesn't change. See the > Wiki article *Wiki generates HTML pages, but does not update them > <https://github.com/weewx/weewx/wiki/Troubleshooting-the-Davis-Vantage-station#weewx-generates-html-pages-but-it-does-not-update-them>* > for > details. This sounds the closest to the situation you describe, but with > WeeWX it does not result in a record being downloaded with a bad date. > Perhaps wview does something different in this situation. The problem can > always be solved by clearing the logger memory. If you do a memory dump > first, it does not result in loss of data. > > Hope that answers your question. > > > On Fri, May 10, 2024 at 11:37 AM P Black <clapey...@gmail.com> wrote: > >> Hello, >> >> I am in the process of migrating from wview to weewx. Yes I know I am >> very late to the game. >> >> The issue I have with wview is that the Davis Vantage Pro 2 periodically >> generates a future date that then hangs any further data collection. The >> fix usually involves: >> >> sudo service wview stop >> vpconfig /dev/ttyUSB0 cleararchive >> remove the bad data from the sqlite and mysql databases >> sudo service wview start >> >> Then if I am late to catch this issue, I have a lot of missing data. >> >> I plan to start installing weewx in the next few days on a raspberry pi 5 >> with a 1TB NVMe and run using the mysql (mariadb) database choice after >> migrating my existing database to the new setup. >> >> Assuming that the date issue is a Davis glitch and not wview, is there a >> software check in weewx to determine if the date is wrong and either delete >> the data for that time or correct it to the correct time and then log? I >> assume that the clear archive would also have to be automatically performed >> (how is that done by software) >> >> PS: I have tried the usual shutdown the Davis, remove batteries and still >> the bad date occasionally occurs. The Davis is the wireless version >> purchased 2011. Also, it must know when I am not around as the bad event >> occurs during my away times. >> >> Stay healthy, >> Pat >> >> -- >> 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 weewx-user+...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/weewx-user/fe2e2e08-bf5b-4da4-a511-7926ede968afn%40googlegroups.com >> >> <https://groups.google.com/d/msgid/weewx-user/fe2e2e08-bf5b-4da4-a511-7926ede968afn%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- 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 weewx-user+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/0ba660b1-cb93-4efb-aeb8-189a7266aa6dn%40googlegroups.com.
