[markkkk42]

Hi
I am running the latest firmware in my Pro2Plus. I had some sensor issues which I repaired and also the Mini had a port die due to a cable had rubbed through on my mast. So when it was all fixed I upgraded the TX and RX to the latest software. Attached is a screengrab of the wind. The gusts can not be this big. The wind measurements seem to probably be ok but I dont understand why the gusts are so high. This was also a issue on the original software I had loaded before the sensor hardware failed. Here is a link to the wunderground page as well

https://www.wunderground.com/personal-we...44#history

I am using a davis sensor pack and the setting in the software is 0 for the davis

[MikeM]

Check that the wind scaling factor within CumulusMX is correct according to your anemometer.

[markkkk42]

I am not running anything other than the weatherduino no other software so its all done in the arduino file\

[werk_ag]

Indeed, those high gusts seem strange, but I don't know what to say... As you can easily check, the routines used to measure the wind gusts are the same since long time, both in the RX and the TX software.

I am using a davis sensor pack and the setting in the software is 0 for the davis

I think you are referring to the VP2_WindRes setting in the RX software, right?
Perhaps you know about it, anyway unless you really want to have a resolution on just 1mhp (1.6Km/h), you can use  any of the other wind resolution options with your Davis anemometer.

Code:

#define VP2_WindRes     2

Gives a good balance between resolution and max. wing gust reading (~182 Km/h)

What I wrote above don't solve any possible issue with wind gust spikes, its just an info.

[markkkk42]

I had large gusts before on the original one before the update so it looks the same. Maybe it is getting some wierd turbulence effects from the solar panels on the roof. The normal windspeeds seem to be pretty accurate

Just had the temp sensor crap itself again after a huge downpour up there...The rain gauge registered 1.48 mtrs per hr rain rate..ended up with about 104mm in 10 mins. So either water got into the sensor of possibly it got zapped by some lightning...all the other sensors are working fine

[JT118]

Re Temp Sensors, these might help:

http://www.globalspec.com/featuredProduc...1653596127

when soldering

and when working these

https://www.sensirion.com/fileadmin/user...ran_v1.pdf

already fitted;

https://www.ebay.co.uk/itm/Sensirion-SHT...1438.l2649

and this;

http://www.ebay.co.uk/itm/ELECTROLUBE-EF...SwRUhZAG~J

Make sure you don't get any on the sensor itself

[markkkk42]

[attachment=1263][attachment=1263]Hi Werk

I am still confused with the wind gust values.  I changed my setting to 2 instead of 0 for my Davis VP2 annemometer and it seems the normal wind speed has remained the same and the gusts have lowered but are still very high. It doesnt worry me as I dont use the gust measurements I am just interested in how you have it detecting them. The other scenario of course maybe drag/bearing friction or enertia of the cup head that sets the values. I have just got it all back working again as the cattle on the farm got through the electric fence and ate all the cables coming down and the Temp sensor had died so I got a DHT22 and fitted it.

[werk_ag]

Hi Mark,

The gust value that is reported to WU, its the value of the highest gust registered between each upload period. I agree that they seem somewhat high, however I don't have any idea why it is happening with you. The routines used to read the wind gust are in use since long time, and I don't have any other reports about this matter.
The picture below is from  WU ilustrating my readings:

   

It will be useful if you could take some graphics locally (with cumulus), as they will have a greater sampling rate, they could help to see it those high values are spikes.
What is the lenght of the cable between the anemometer and the TX unit?

My wishes of an wonderful 2018

[markkkk42]

Hi Werk

I dont know what you mean by taking graphics locally from Cumulus...unless you mean the webserver I get on port 80?

There is around 8  mtrs of cable from the sensor package to the TX unit

[werk_ag]

Hi Mark,

I think I know that your are running that weather station in stand alone mode (no PC ou RPi), reporting directly to WU. What I mean is, perhaps when you are in the farm, you could connect a laptop, and leav Cumulus running for a day or so. The graphs obtained with Cumulus will have a better sampling rate than the graphs from WU.