Re: [weewx-user] Davis 6250 vantage vue and Weewx

[Jason Rennie]

On Fri, Jul 6, 2012 at 2:58 PM, Doug <dsc...@yahoo.com> wrote:

Do I need to buy the add on interface and software from Davis in order to accomplish this?

Yes, you need to buy the "datalogger".  See this recent thread.  My understanding is that the serial version is most robust, the USB version is robust once you add ferite coils and install a udev script (I have the USB version---I'm happy with it), and the IP version is a bit troublesome.

Are others doing this and what is you method of interface. I see the it supports serial, USB, and IP interfaces from the Davis. I run a local 192.168 network, would it just be connected and share an address on the same network?

For USB and serial, you'd connect to a computer on which you have weewx running.  Weewx generates web pages that you can share by running a web server.

 

I also run an NSLU2 Debian Lenny system at a remote location and I would like to put a WX system up there running a web page or sending data back to my main site for submission to a web page sourced there.

You are in good company.  Personally, I run weewx on my desktop (which normally stays on 24/7), but there are certainly people here who run on NSLU hardware.

Cheers,

Jason

[Thomas Keffer]

LOL! Earlier today someone else just asked about what you need besides the VantageVue. Here's what I wrote to Pete: 

Unfortunately, yes, you do need one more thing besides the VantageVue. if you want to connect their weather stations to a computer, Davis makes you buy a "serial logger" in addition to the weather station. It comes with their "WeatherLink" software. You buy the package, throw away the software. Considering that the logger is nothing more than a 1MB chip, the $165 price tag is pretty outrageous but, sorry, that's the way they do it! 
They offer two kinds: a serial interface, or a USB interface. The former has proven to be more reliable, but nowadays not all computers have a serial port. 
Try shopping around. You can get the serial version for $150 or a bit less from Ambient.

One thing I'll add is that the software that comes with the package, "WeatherLink" is Windows only. 

I do not recommend using the IP interface. Experience has shown it to be unreliable. You're much better off using the USB or Serial (preferred) interface. Of course, that limits the max distance between the weather station console and your computer, but there are ways of getting around this.

I am not aware of any weewx users using the NSLU2. I don't think the processor speed will be a problem, but the memory (32MB, right?) could be. If this is the case, weewx's predecessor,  wview, might be a better choice. It's written in C and is more memory efficient. It's harder to modify and is not as easily extensible, but it has lots of users, one of which I'm sure has ported to the NSLU2. In any case, wview and weewx use the same schema in their main database, so you can easily switch from one to the other. 

So, to summarize, the VantageVue with the serial interface and weewx on your Linux server would be a good choice. If your server does not have a serial (DB9) interface, then the USB interface also works well.

For your NSLU2, the VV with the USB interface and weewx would be a good choice. If weewx is too much for it, then try wview.

Hope this helps!

-Tom Keffer

On Fri, Jul 6, 2012 at 11:58 AM, Doug <dsc...@yahoo.com> wrote:

I am thinking about buying a Davis 6250 vantage vue station and I would like to interface it to my Linux server. I have a few questions.

Do I need to buy the add on interface and software from Davis in order to accomplish this?

Are others doing this and what is you method of interface. I see the it supports serial, USB, and IP interfaces from the Davis. I run a local 192.168 network, would it just be connected and share an address on the same network?

I am a newbie to the WX stuff, but not Linux, so if I am looking for comments on WX station selection and interface.

I also run an NSLU2 Debian Lenny system at a remote location and I would like to put a WX system up there running a web page or sending data back to my main site for submission to a web page sourced there.

Open to any and all comments.

Doug

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[Pete Geenhuizen]

When it rains it pours I guess.

Doug,

I found the Vantage Vue for $256.99
http://www.scientificsales.com/ProductDetails.asp?ProductCode=6250&e=Y
and the
Serial WeatherLink for $116.24
http://www.ambientweather.com/dain65sewefo.html or if you are so
inclined you could build your own
http://madscientistlabs.blogspot.com/2011/10/build-your-own-davis-console-datalogger.html
(Tom provided this link)

--
Unencumbered by the thought process.
-- Click and Clack the Tappet brothers

[Jason Rennie]

On Fri, Jul 6, 2012 at 3:29 PM, Jason Rennie <jre...@gmail.com> wrote:

You are in good company.  Personally, I run weewx on my desktop (which normally stays on 24/7), but there are certainly people here who run on NSLU hardware.

Sorry---I had my wires crossed.  Tom certainly knows better than I.

Cheers,

Jason

[John Canfield]

Just a comment about the NSLU2...

I had three of them running wview and then weewx in three different locations and they were unreliable after a period of time primarily due to corruption of the flash memory.  I had a spare for each location and it seemed like I was always sending out a spare to replace a wonky NSLU2.  Enter the fit-PC.  Small, fanless, reliable.

John

[Thomas Keffer]

Well, there you go! A user has run weewx on a NSLU2!

My 5 year old fit-PC has proven to be utterly reliable, although lately the WiFi connection has gotten a little flaky going through 4 walls of the house and a wall of the cabinet it's located in. I moved it a bit closer and now it's happy again.

Unfortunately, they've gotten pretty expensive. 

-tk

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[Doug]

Thanks to everyone for your responses so far. I was a little disappointed that the IP version of the Vantage VUE interface was unreliable since it would be the easiest to use where the distance between the console and the computer are far apart. My NSLU2 is in a utility room with all of my network stuff and I would want to have the console at an entirely different location.

I am interested in more info on the serial verses the USB and the favor of the serial.  Since most computers do not have native serial ports anymore you would end up suing a serial to USB adapter anyway. Is it the Davis USB implementation that is faulty?

ON the NSLU2 - I use all of mine with hard drives so data storage is unlimited and I would not have the problems of flash memory storage or is there still a problem in running it this way?

Also no one suggest other WX station hardware. Since I have not actually bought any of the Davis equipment yet I go go another route all together. Any suggestions?

Doug Crompton
WA3DSP
www.crompton.com

---

From: Jason Rennie <jre...@gmail.com>
To: weewx...@googlegroups.com
Sent: Friday, July 6, 2012 3:29 PM
Subject: Re: [weewx-user] Davis 6250 vantage vue and Weewx

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[Joseph Miller]

The NSLU2 was a great platform and I still use what remains from my hoarded stock to serve up images from webcams, but the hardware is flakey with random reboots required at the other end of an hour drive.  The wall wart supply is, in my experience, the weak link.

 

I switched to using micro-itx boards, with chassis and very effiicent fanless switcher from mini-box.  With a very small capacity solid-state drive the initial cost is low, the power consumption is very low, and the debian installation trivial as the machine is vanilla x-86.

 

here is a motherboard from minibox's site:

http://www.mini-box.com/pico-SAM9G45-X

Joe KI7WV www.pocomas.net 

---

From: weewx...@googlegroups.com [weewx...@googlegroups.com] on behalf of Thomas Keffer [tke...@gmail.com]
Sent: Friday, July 06, 2012 2:53 PM
To: weewx...@googlegroups.com
Subject: Re: [weewx-user] Re: Davis 6250 vantage vue and Weewx

[Pete Geenhuizen]

Doug,
I'm looking for a replacement weather station, and am seriously considering the Vantage Vue option simply because there aren't many options when it comes to Linux.  Of those this appears to me to be the best.

The approach I used was to look for software that would run on Linux and then see what hardware it supports, and on that basis Vantage Vue seems to be about the only game in town, I should add that I have the additional problem of trying to get this to work in Centos, there seems to be more support for Ubuntu and Fedora.

On 07/06/2012 11:33 PM, Doug wrote:

Thanks to everyone for your responses so far. I was a little disappointed that the IP version of the Vantage VUE interface was unreliable since it would be the easiest to use where the distance between the console and the computer are far apart. My NSLU2 is in a utility room with all of my network stuff and I would want to have the console at an entirely different location.

I am interested in more info on the serial verses the USB and the favor of the serial.  Since most computers do not have native serial ports anymore you would end up suing a serial to USB adapter anyway. Is it the Davis USB implementation that is faulty?

ON the NSLU2 - I use all of mine with hard drives so data storage is unlimited and I would not have the problems of flash memory storage or is there still a problem in running it this way?

Also no one suggest other WX station hardware. Since I have not actually bought any of the Davis equipment yet I go go another route all together. Any suggestions?

Doug Crompton
WA3DSP
www.crompton.com

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[John Canfield]

The other issue with the NSLU2 is that it won't power on automatically unless you hack the hardware, this created problems for me.

[Thomas Keffer]

The IP version can certainly be made to work, but it won't be as reliable as a USB or serial version. If this is your best option, it's certainly a viable one. 

As for the USB version of WeatherLink, the problem is the CP2101 chip they chose. It will occasionally (2-3 times a year) disconnect, claiming "EMI interference." The cure is a couple of ferrite coils and a udev script. Once you do that, it's rock solid. It's what I use and it's been about 3 years since my last problem.

The serial version works great. If your computer does not have a serial port and you use a converter, your system will be as reliable as whatever converter you chose. There are lots of good ones, so this is also a perfectly viable route.

If you go the USB or serial route, to solve the distance problem you could use a serial to ethernet converter. There are lots of them available (here's one). I'm not aware of any weewx user who has done this, but in theory it should be transparent to weewx. Note the "in theory" part! :-)

As for weather station hardware, if you can afford it, Davis is the way to go. There are cheaper stations out there, but as you go up the price curve Davis's products are the first you meet that are "semi-professional" in quality. They are very reliable, there's tons of experience and software available for them, and their support is very good. Well worth it if you can afford one. 

Hope this helps!

-tk

[Doug]

Again thanks for the replies. I am still not sure what hardware I will interface it to. I have a number of NSLU2's running and at least one or two still in the box. Unfortunately support and interest in them is waning as they have not been in production for many years. Eventually they will completely fade away.  I do have a Raspberry PI board on order though and I suspect running Debian or Ubuntu on it would be a step up from the NSLU2. It is a long wait to get one though and you can only order one at this time, so I will have to see if it was worth the wait. Mine should be here in late August.

I do have two NSLU2's that have been running 24/7 for a number of years. I made the power on mod and also mod'ed for double clock speed. They are running Debian Lenny. I am not seeing the unreliable issue I see reported here.

Is there any documentation on the interface options on the Davis Vantage Vue and how to use them available without buying the products?  I would like to read over the manuals before I buy.

Doug Crompton
WA3DSP
www.crompton.com

---

From: Thomas Keffer <tke...@gmail.com>
To: weewx...@googlegroups.com
Sent: Saturday, July 7, 2012 10:23 AM

[Thomas Keffer]

Unlike a lot of manufacturers, Davis does a good job of documenting the communications protocol for the Vantage series. You can find it here:  http://davisnet.com/support/weather/download/VantageSerialProtocolDocs_v230.pdf 

As for the hardware interface, well, they're just a standard DB9 or USB port.

Is that what you're looking for?

-tk

[Jason Rennie]

On Sat, Jul 7, 2012 at 11:57 PM, Doug <dsc...@yahoo.com> wrote:

Is there any documentation on the interface options on the Davis Vantage Vue and how to use them available without buying the products?  I would like to read over the manuals before I buy.

Did you see this?  In another thread, Tom shared a link on how to build your own datalogger: http://madscientistlabs.blogspot.com/2011/10/build-your-own-davis-console-datalogger.html

Jason

[Doug]

Yes it is helpful to see that. It does refer to pro and pro2 though. I assume the vantage vue is similar. Is there any compelling reason to go to the pro or pro2 over the vantage vue? Do they all use the same logger and interfaces?

 

Doug Crompton
WA3DSP
www.crompton.com

---

From: Thomas Keffer <tke...@gmail.com>
To: weewx...@googlegroups.com

Sent: Sunday, July 8, 2012 9:24 AM

[Jason Rennie]

The Pro is the old version of the Pro2.  The Pro2 seems to have better hardware than the Vue---larger rain bucket, anemometer & radiation shield.  Here's what Davis has to say:

http://www.davisnet.com/weather/how-to-choose-a-weather-station/index.asp#compare

Davis seems to sell one Weatherlink+datalogger package for Pro2, Vue and Envoy, so I presume they have the same datalogger hardware interface:

http://www.davisnet.com/weather/products/weather_product.asp?pnum=06510USB

Jason

[lonehighway]

I have the USB interface on my station which I bought earlier this year and I have had no issues with the USB or interference, if that helps.

[Bill]

Well given your success with NSLU2's I so no reason to switch to another
device. In the meantime, there are a lot of cheap ARM devices becoming
available, so when the time comes you will have a lot of choices.

I just received a Rasberry PI that I ordered months ago, but haven't had a
chance to try it yet and so cannot say how well it runs weewx.

A word of caution on the ARM boxes, there are a lot of different devices and
it is hard to say how a specific one will work. I got a Pogoplug to use for
my weather station, only to find the chipset version in my unit had poor USB
support, so I had to switch to something else. I thimk this might not be a
common problem, I will see when I setup my next device.

Bill

[Bill]

I am running the Vantage Vue. I chose it over the Pro2 because of the price
and compatibility with weewx.

There are 2 differences I know of besides those already cited:

1) The Pro2 allows the sensors to be separated, so you can have the wind and
temperature at different heights. With the Vue it is an integrated sensor,
which means you cannot measure wind a bit higher than temperature.

2) The Pro2 has extra sensors you can buy such as Solar radiation and pond
temperature. I'd have liked the second to measure the lake temperature, but
didn't go this route since the total cost would have been much higher.

And I should mention the Vue has a truly ugly (unless you like WWII retro
electronics) console compared to the Pro2.

Bill

On Sunday 08 July 2012 12:54, Doug wrote:
> Yes it is helpful to see that. It does refer to pro and pro2 though. I
> assume the vantage vue is similar. Is there any compelling reason to go to
> the pro or pro2 over the vantage vue? Do they all use the same logger and
> interfaces?
>
> �
> Doug Crompton
> WA3DSP
> www.crompton.com
>
> >________________________________
> > From: Thomas Keffer <tke...@gmail.com>
> >To: weewx...@googlegroups.com
> >Sent: Sunday, July 8, 2012 9:24 AM
> >Subject: Re: [weewx-user] Davis 6250 vantage vue and Weewx
> >
> >
> >Unlike a lot of manufacturers, Davis does a good job of documenting the
> > communications protocol for the Vantage series. You can find it here:�
>
> http://davisnet.com/support/weather/download/VantageSerialProtocolDocs_v230

>.pdf�

[Doug]

Bill,

 Thanks for the info. I am looking forward to your experiences with the Raspberry PI. Mine won't be here for at least 6-8 more weeks.

I do have a question regarding running weewx on a non console device like the NSLU2.   Do you have it running on such a device? What feedback do you get and how do you view it.

 

Doug Crompton
WA3DSP
www.crompton.com

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Sent: Thursday, July 12, 2012 2:00 PM

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[Richard Mulvey]

For what it's worth, I have weewx running on another embedded
computer, the $80 BeagleBone, and it's absolutely rock-solid. Not
having a display/keyboard isn't really relevant to weewx isn't
important, since the interface is all via the generated web pages,
anyhow.

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[Thomas Keffer]

I, like, Richard, access weewx strictly by a command line interface, using ssh.

One of the design goals of weewx was to be able to run it "headless". No GUI, no webserver. Keep it simple.

-tk

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[vds]

On Friday, July 13, 2012 6:27:18 AM UTC-7, Tom Keffer wrote:

I, like, Richard, access weewx strictly by a command line interface, using ssh.

Same here on my $20 Seagate Dockstar.  SSH is the only way to go.

 Web pages may be viewed on whatever browser-enabled device you have access to.

[Doug]

Ok, that is what I suspected.  One thing I would like to do is forward the data from a remote site, that does not have static IP, to my main site where I would run a web page on my server. Is there a way to do this in WEEWX or would I have to write my own transport to transfer the data into my web page at my main site?

 

Doug Crompton
WA3DSP
www.crompton.com

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From: vds <vince...@gmail.com>
To: weewx...@googlegroups.com
Sent: Friday, July 13, 2012 4:44 PM

Subject: Re: [weewx-user] Davis 6250 vantage vue and Weewx

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[John Canfield]

I simply FTP the web pages every ten minutes to my hosting site.  I happen have a static IP at the house, but I prefer to not open up port 80 to the little fit-PC.

John
weather.janeandjohn.org

On Friday, July 6, 2012 1:58:56 PM UTC-5, Doug wrote:

I am thinking about buying a Davis 6250 vantage vue station and I would like to interface it to my Linux server. I have a few questions.

Do I need to buy the add on interface and software from Davis in order to accomplish this?

Are others doing this and what is you method of interface. I see the it supports serial, USB, and IP interfaces from the Davis. I run a local 192.168 network, would it just be connected and share an address on the same network?

I am a newbie to the WX stuff, but not Linux, so if I am looking for comments on WX station selection and interface.

I also run an NSLU2 Debian Lenny system at a remote location and I would like to put a WX system up there running a web page or sending data back to my main site for submission to a web page sourced there.

[Thomas Keffer]

Weewx includes an FTP facility that can do this easily.

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[Bill]

It will be a week or 2 before I get to the PI; my plan was use it for Weewx
but I've moved to something else since (the order took a long time). Now I
will most likely be using it for video streaming and whatever grabs me.

For these type of devices I always run them headless and use ssh to remotely
connect. The output goes to one of the log files, or where ever it has been
configured to print to. If it is just a command that I want to leave running
I use 'nohup' and the output goes to 'nohup.log'.

In the case of Weewx I just watch my weather pages and ignore the device
unless something stops working, only then do I bother connecting.

/bill

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[Bill]

Weewx does the FTP for you to your site, as long as the Weewx machine has FTP
access to the server.

/bill

[Doug]

Check out Raspbian.org  or google raspbian -=- looks very interesting.

 

Doug Crompton
WA3DSP
www.crompton.com

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From: Bill <boob...@rogers.com>
To: weewx...@googlegroups.com

Sent: Thursday, July 19, 2012 11:51 AM

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[Bill]

Funny you should mention that, I'd just come across it separately.

Arch Linux also has very good ARM support: archlinuxarm.org/platforms

But watch out for the ARMv6 Pogoplug the custom kernel doesn't yet have
support for USB/serial, so Weewx over USB doesn't work. No idea if this is
an issue for the PI, nor when they will be adding support.

There are a lot of ARM boxes showing up, lookup 'mk802' for example. Some of
them are likey good Weewx platforms for a very low cost.

/bill

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