so I found this: https://shop.weatherstations.co.uk/meteo-pi-1832-p.asp seems like you can connect the davis console directly to raspberry pi header and use via serial. anyone tried this with weewx? Seems a bit cheaper than the weatherlink option and maybe more suitable for my needs. T
On Saturday, 10 April 2021 at 17:02:53 UTC+1 Chris Thompstone wrote: > So basically if I want to use weewx with davis station and Pi. I'd need: > > https://www.weathershop.co.uk/shop/brands/davis-instruments/vantage-pro/davis-vantage-pro2-cabled-weather-station > plus > > https://www.weathershop.co.uk/shop/accessories/spares-by-brands/davis-spare-parts-accessories/davis-accessories-upgrades/vantage-pro/davis-6510-weatherlink-serial > > This should be a reliable problem free setup? > Think unfortunately there is very little choice of weather station if you > want something that's going to last and you can get spares for. > Thanks for the advice. > On Saturday, 10 April 2021 at 16:23:34 UTC+1 Greg Troxel wrote: > >> >> Chris Thompstone <[email protected]> writes: >> >> > [davis query] >> >> > I like a wired station setup, due to reliability/simplicity and it must >> > work with weewx reliably. (no periodic fiddling or messing) >> > So was thinking a vantage pro2 wired with a serial interface to connect >> to >> > my Pi. >> > >> > To be honest not interested in the console as I generally never look at >> > them. Can't see the point when I can use the weewx on my phone or PC. >> If >> > I had my way there would be a blank box with serial socket to connect >> the >> > Pi to, plus power, nothing more. >> > >> > But I guess I have to have that anyway, but does the console have the >> > serial connection on it to get to the Pi? How do I go from my serial >> USB >> > cable on my Pi to the Davis? Do I have to buy something else? >> > >> > Not interested in any of the Davis logging stuff, just want the raw >> data >> > flowing into weewx on a Pi, nothing more. >> >> Here's one solution: >> >> Davis Vantage Pro wired >> ISS outside >> console inside >> >> Davis serial datalogger #6510SER >> plugged into console >> >> the datalogger has a DB9 and plugs into a usb/serial adaptor (or an >> actual serial port). I'm using an prolific adaptor >> >> weewx configured to talk to the USB serial port >> >> system that is running weewx has a battery-backed RTC so it knows the >> data when it boots. A workaround is scripts to not start weewx until >> the computer is affirmatively synchronized with NTP. >> >> For me, this setup has been reliable. >> >> You said you weren't interested in some things but I wanted to point >> out: >> >> My VP2 is wireless. I have had zero trouble with the wireless part. >> I have had to replace the CR123 in the ISS maybe a few times in 10 >> years. I had a VP(non-2) and that wireless worked, but I think the >> supercap failed and it's on my list to fix. However, I am not sure if >> the wired option provides power to the ISS, or if it's just the data >> link. I don't mean to suggest you are wrong to do wired, just that I >> went wireless because wires were awkward and it has been ok. >> >> The pressure sensor is in the console, as is indoor temp/humidity. >> The ISS only has wind/rain and outside temp/humidity. So even if you >> don't look at the console, without it you will not have pressure/temp. >> >> There is a "weather envoy" which I think still needs a datalogger to >> plug in which is more or less a console without a display but I'm not >> sure about pressure. I have neer seen one or used it. >> >> You can get a VP2+ with solar radiation and UV sensors on the ISS, or >> you can add them later. >> >> There are third-party loggers and interfaces. I decided to just pay >> for the davis one even though it costs double the third-party ones, >> because I was confident I would have no trouble. I have nothing bad >> to say about the third-party stuff -- I just haven't tried it. There >> are some that have datalogging and some that don't. >> >> You said you were not interested in logging, just raw data to Pi, but >> I think that's a mistake. The davis logger records data every 5 >> minutes (hardware archive interval, configurable) and will do so on >> the 3 D cell batteries in the console for multiple days during a power >> failure. When the weewx computer starts up it will get the old >> archive records and put them in the weewx database. This has happened >> to me mulitple times and worked very well. So I have continuous data >> over several storms where I would have had a gap. If your RPI is on a >> UPS/generator that can go 2 weeks AND if it is *never* down for more >> than 5 minutes even when you have sd card trouble or upgrade trouble >> then you don't need the logger. As you can guess I don't believe >> this. If you really don't mind losing data, then yes you don't need >> the logger. >> >> If you mean you aren't interested in having the equipment send data to >> the davis cloud where you have trouble geting it back from, then >> agreed :-) >> >> -- 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/fee435c8-d2c8-4f49-9b36-77c66dda8499n%40googlegroups.com.
