If you use Cumulus, please donate Image

Please read this post before posting

Latest Cumulus release v1.9.4 (build 1099) - Nov 28 2014
Latest Cumulus MX release - v3.0.0 build 3041 Aug 17 2016

New be Just starting

For discussion of DIY weather equipment - sensors, accessories, improvements to existing kit etc
JohnDon
Posts: 30
Joined: Tue Sep 14, 2010 10:09 pm
Weather Station: Smart Weather 2080
Operating System: Win XP
Location: Ireland
Contact:

New be Just starting

Postby JohnDon » Tue Sep 28, 2010 11:10 am

Hi All
I am interested in setting up a weather station on my site. Can anyone hold my hand LOL and tell me what I need to buy etc. I live in Ireland and I am running windows XP my site and camera is under construction but I am getting there and would like to add this feature. If it wont cost me a fortune. http://www.carnebeach.com/live_view.html
Thanks in advance
John

User avatar
hills
Posts: 662
Joined: Sat Dec 26, 2009 8:52 am
Weather Station: Fine Offset WH1091
Operating System: Windows XP
Location: Crafers, South Australia
Contact:

Re: New be Just starting

Postby hills » Tue Sep 28, 2010 12:50 pm

Hi John

A lot of us on here use these weather stations: http://www.foshk.com/Weather_Professional/WH1091.htm or other models in the fine offset range.

They are available for well under 100 pounds (sorry I'm in Aus and don't have a pound sign) They work really well with Cumulus.

While they're cheap and cheerful, mine has been very reliable so far.

User avatar
Red Sky
Posts: 12
Joined: Wed Sep 08, 2010 5:55 am
Weather Station: Smart Weather WH2080
Operating System: Windows 7
Location: Berwick-upon-Tweed, UK

Re: New be Just starting

Postby Red Sky » Tue Sep 28, 2010 2:18 pm

Yep, this is what I use - I got mine from eBay for around £85. It works well with Cumulus - which is far, far better than the Easyweather program which comes packaged with the weather station.

JohnDon
Posts: 30
Joined: Tue Sep 14, 2010 10:09 pm
Weather Station: Smart Weather 2080
Operating System: Win XP
Location: Ireland
Contact:

Re: New be Just starting

Postby JohnDon » Tue Sep 28, 2010 11:21 pm

Thanks for the replies guys I found one on Ebay is this one ok HERE

Thanks
John

User avatar
hills
Posts: 662
Joined: Sat Dec 26, 2009 8:52 am
Weather Station: Fine Offset WH1091
Operating System: Windows XP
Location: Crafers, South Australia
Contact:

Re: New be Just starting

Postby hills » Wed Sep 29, 2010 8:43 am

Yep! ;)

User avatar
Red Sky
Posts: 12
Joined: Wed Sep 08, 2010 5:55 am
Weather Station: Smart Weather WH2080
Operating System: Windows 7
Location: Berwick-upon-Tweed, UK

Re: New be Just starting

Postby Red Sky » Thu Sep 30, 2010 8:12 pm

hills wrote:Yep! ;)

What he said... ;)

JohnDon
Posts: 30
Joined: Tue Sep 14, 2010 10:09 pm
Weather Station: Smart Weather 2080
Operating System: Win XP
Location: Ireland
Contact:

Re: New be Just starting

Postby JohnDon » Thu Sep 30, 2010 8:18 pm

Thanks, its ordered and on the way. The fun will start Monday or so

User avatar
Red Sky
Posts: 12
Joined: Wed Sep 08, 2010 5:55 am
Weather Station: Smart Weather WH2080
Operating System: Windows 7
Location: Berwick-upon-Tweed, UK

Re: New be Just starting

Postby Red Sky » Thu Sep 30, 2010 8:26 pm

Once you've got it installed you can add to the enjoyment by carrying out simple DIY modifications to the rain sensor (see this this thread, amongst others), wind vane, and even the louvered screen surrounding the external thermometer/transmitter unit. A wander through the "Homebuilt" section will give you an idea. But whatever you choose to do do, or not, I think you'll have fun.

User avatar
hills
Posts: 662
Joined: Sat Dec 26, 2009 8:52 am
Weather Station: Fine Offset WH1091
Operating System: Windows XP
Location: Crafers, South Australia
Contact:

Re: New be Just starting

Postby hills » Thu Sep 30, 2010 10:32 pm

Yes, the rain gauge mod is particularly easy, I've done it too. It makes it record in .1mm rather than .3mm increments and makes it more accurate aswell, as less rain splashes over the side. Plus as RS said above, its all good fun! ;)

JohnDon
Posts: 30
Joined: Tue Sep 14, 2010 10:09 pm
Weather Station: Smart Weather 2080
Operating System: Win XP
Location: Ireland
Contact:

Re: New be Just starting

Postby JohnDon » Thu Sep 30, 2010 11:19 pm

I have looked at the pictures and it looks easy enough, except for the paint job LOL I am an engineer by trade. I have been working on a massive project for the past 2 years (nothing to do with engineering really) but has been a huge learning curb so I was looking for something to chill the mind and have a bit of a laugh. I am doing a web page on our project at the moment Ill show you when I am finished. dont worry I am not selling anything.

Gina
Posts: 1885
Joined: Sat Feb 21, 2009 12:41 pm
Weather Station: Nothing working ATM - making one
Operating System: OS X, Linux Mint, Win7 & XP
Location: Devon UK

Re: New be Just starting

Postby Gina » Fri Oct 01, 2010 10:22 am

I think using a 7in funnel gives a good compromise. I've now gone a stage further and using a 10in funnel which on initial calibration gives 0.045 mm per bucket tip. It now responds to light showers and even a heavy dew. For the 7in funnel, a 5 litre plastic paint/preserver bucket (upside down) makes a good housing and support for the funnel. For the 10in I'm using a farm cattle lick bucket - you'd need to know(or be) a farmer to get that.
Gina

Sorry, no banner - weather station out of action. Hoping to be up and running with a new home-made one soon.

User avatar
daj
Posts: 2040
Joined: Tue Jul 29, 2008 8:00 pm
Weather Station: WH1081
Operating System: Pi & MX
Location: SW Scotland
Contact:

Re: New be Just starting

Postby daj » Fri Oct 01, 2010 11:16 am

Question ... I know this has bee discussed many times but I am not sure I have seen a definitive answer.....If I were to add a 7 inch funnel, do I need to change any of the calibration settings in Cumulus to compensate for a over-sized collecting device? If I do, how do I calculate the figure to use? :?:
David
kippfordweather.uk
Cumulus MX & Raspberry Pi

User avatar
steve
Cumulus Author
Posts: 25243
Joined: Mon Jun 02, 2008 6:49 pm
Weather Station: Davis VP2
Operating System: Raspbian
Location: Sanday, Orkney
Contact:

Re: New be Just starting

Postby steve » Fri Oct 01, 2010 11:36 am

daj wrote:If I were to add a 7 inch funnel, do I need to change any of the calibration settings in Cumulus to compensate for a over-sized collecting device? If I do, how do I calculate the figure to use? :?:

Yes. You need to apply a calibration setting equivalent to the ratio of the old to new funnel cross-sectional areas. So if you double the area, you need a calibration setting of 0.5, because it now takes half as much rainfall to tip the bucket.
Steve
-----
Hosting available for Cumulus web sites. See http://sandaysoft.com/forum/viewtopic.php?f=2&t=11876

Like Cumulus and want to support it? Please donate! Image

User avatar
hills
Posts: 662
Joined: Sat Dec 26, 2009 8:52 am
Weather Station: Fine Offset WH1091
Operating System: Windows XP
Location: Crafers, South Australia
Contact:

Re: New be Just starting

Postby hills » Fri Oct 01, 2010 12:18 pm

The diameter of mine is 138.8mm (3 times the original area) and after months of fine tuning, a calibration of .35 exactly matches my manual rain gauges.

Gina
Posts: 1885
Joined: Sat Feb 21, 2009 12:41 pm
Weather Station: Nothing working ATM - making one
Operating System: OS X, Linux Mint, Win7 & XP
Location: Devon UK

Re: New be Just starting

Postby Gina » Fri Oct 01, 2010 12:29 pm

The calibration required is the ratio of old rain collection area to new. The old area is approximately 11x5 cm giving 55 sq. cm. The new area is given by the area of the top of the funnel. Being circular this is calculated by squaring the radius and multiplying by Pi (a mathematical/engineering constant of about 3.142). Thus for a 7in (17cm internal diameter) the radius is 8.5cm and the area works out at 227 sq. cm. Therefore, the calibration value is 55/227=0.24.

This simply converts the rain data values as a result of the bigger funnel. Many of us have used a manual rain gauge at the same time as taking the automatic values and comparing the two, as Phil (hills) has just said. Cheap rain gauges are available from garden centres. I found my first rain gauge was reading low by about 30%. The new one is more accurate. So with the old gauge and a 7 inch funnel my calibration worked out at 0.33 (ie. 0.1mm per bucket tip). Rather than the 0.24 if the gauge had been correct.
Gina

Sorry, no banner - weather station out of action. Hoping to be up and running with a new home-made one soon.


Return to “Homebuilt”

Who is online

Users browsing this forum: No registered users and 1 guest