Nearly all the software 'solutions' have a downside of one sort or another. Since you have an expensive weather station I truly do not see the problem in spending another £8 on a clock for your computer. I even fit clocks to my pi-zeros because without a reliable clock the Pi is pretty naff.
You could always try and fiddle even more with the start up script - but believe me th\t many many have been there before you. The current weewx solution will wait for a time to be within the past year I believe to get around the totally stupid epoch zero times - but this does not work well when the fake hardware clock on the pi is involved as the time could be just an hour or so adrift. If you disable hardware clock completely weewx will wait for a time before starting - but other parts of your rpi system will then be running with the epoch zero date/time. People have tried waiting for NTP to be available - but that also has not been 100% reliable - hence the current evolution in weewx. Truly, the best and most foolproof way is to fit a b....y clock and be done with it. Unless you are a masochist and want to spend the resy of your life chasing oddball issues ……. On Wednesday, 23 May 2018 16:48:35 UTC+3, [email protected] wrote: > > I was hoping for a simple software solution like inserting a delay into > the WeeWX startup routine to give the Pi time to Gert the correct time > > > John > > On Wednesday, May 23, 2018 at 2:25:45 PM UTC+1, Andrew Milner wrote: >> >> The simplest, easiest and best way is to get a RTC module for the RPi. >> Cost is under £10. Removes all the hassel of the RPi not having the >> correct time. weewx tries to wait for time to have been set as best it can. >> >> See the wiki for more information on running weewx with an RPi >> https://github.com/weewx/weewx/wiki/Raspberry-Pi >> >> >> >> >> On Wednesday, 23 May 2018 15:54:09 UTC+3, [email protected] wrote: >>> >>> I am running WeeWX on a Raspberry Pi 3 connected to a Vantage Pro2 >>> Station. >>> >>> If I power down the Pi, when I power it back up the time on the Vantage >>> Pro is incorrect and is set to the time the Pi was powered down. >>> >>> This, I assume, is due to the fact the Pi does not have a RTC and gets >>> its time from the network. >>> I also assume that WeeWX is starting before the network is up. >>> >>> What is the best way to get the correct time to the Vantage >>> >>> >>> Thanks >>> >>> >>> -- 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]. For more options, visit https://groups.google.com/d/optout.
