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81
I contacted support to see(they do answer fast, I'll give them that!)  and here is their reply(mostly a repeast of what people mentionned here :P )

Quote
For calibration, there are 5 different gains you can set.

1.     For < 5m/hr, please keep 1.0 calibration factor.
2.     For the rest of 4 setting, like your recorded rain , can you check what is the average rain rate it has? You can find the most long period time of rain fall ( that contributes most to the rainfall during that time) and note what is the rain rate. Once you can determine the rain rate, then you can adjust rain gain to 0.82.
3.     Basically you can set all the rest four to 0.82, and adjust it if your future rain rate is different and thus need to adjust it slightly to meet the best result.
So it need to take a little bit time and effort to adjust this value.
82
Weather Website PHP/AJAX scripting / Re: wxStory 3.0
« Last post by hunter362 on June 29, 2022, 09:21:26 AM »
Jim,
Images folder is 0755, changed folders, changed all images to 0777, still get the same error

PHP 5.5.9-1ubuntu4.29+esm15 (cli) (built: Oct 27 2021 18:41:06)

http://www.camillusweather.com/weather-story.php
83
with original setting it overestimate by +50/70%
I've got meanwhile two of them - a -device and a regular one.
But the overreading cannot be generalized, not with my observations now over a couple of months (six to be precise - with 73 rain days out of 179).
It's sometimes in full tune with my WH40 and even lags behind sometimes ....

It's a good dew indicator and I don't mind it reacting on dew, as dew is also rain and fills the spoons of my tipping rauge gauges.
It's also a good rain indicator. It already shows rain when it still takes a while for the WH40 to empty its first spoon.
Will be a tricky task to get it calibrated for the majority of rain events - for all it won't work, not with the calibration means we have so far. Maybe with some characteristic curve also using wind readings implemented in the firmware ....

I have one GW2000 set up with WH40 and WS90 and one with WH65/WS69 and WS90 - all gain = 1.0, and depending on rain rate and wind reality moves within the borders of the three.
Of course it's not useful for most to have three devices for what could ideally be provided by one device ....

But to reduce the WS90 onto its rain readings wouldn't be fair either. It's a solid 7-in-1 one-piece weather device with no mechanical parts, which in itself is already something special.
84
Weather Web Site Help / Re: Hostgator Server Migration - Slow to Load Web Page
« Last post by weatherdoc on June 29, 2022, 08:02:07 AM »
I like the photo of your rack-mounted hardware setup for your networking on your blog site. Very professional and neat. I finally gave up on commercial hosts for my website after switching a few times and about a year ago started hosting my website on a Synology NAS DiskStation DS220+. The upfront cost is high ($300 USD) for a server fast enough to serve the website efficiently plus two 3TB hard drives ($55 USD each) setup as a RAID but there are no recurring costs and the SSL certificate is free. I was paying IONOS $120 USD per year for their basic package, so if my NAS + drives last 3 years then I will have recouped my return on the investment! By the way, I've been to Chatteris. I was stationed at RAF Mildenhall 1984-1987 and my wife and I would take day trips around East Anglia most weekends (we lived in Thetford). We often visited Cambridge, Ely, Newmarket and Chatteris.
85
 with original setting it overestimate by +50/70%
There isn't an official statement from ecowitt for calibration.
I've installed a second unit of wittboy but here in Italy we are under a severe heat wave. I've not tested piezo sensor anymore
86
Prior to purchasing my WH57, I had read the problems associated with single sensor lightning detection, particularly the difficulty of differentiating between strong signal at great distance and weak signal at closer distance.
I ended up purchasing out of curiosity, rather than the expectation of receiving a trouble free detector.
I have to admit, that I personally, have been pleasantly surprised.
My only issue, was that I had to wait over 3 months before I had any lightning to detect.

Anallysis of my weewx data dump (taken before my most recent strikes)

Count   Distance(Miles)   Distance (Km)   Step
55           24.85484768   40   
32           22.9907341   37                   3
61           21.12662053   34                   3
39           19.26250695   31                   3
44           16.77702218   27                   4
40           14.91290861   24                   3
14           12.42742384   20                   4
30           10.56331026   17                   3
8           8.699196688   14                   3
7           7.456454304   12                   2
1           6.21371192   10                   2
1           3.728227152   6                   4
1           3.10685596   5                   1

Now, in the UK the met office publishes an observation map, where lightning stikes can be selected.
The position is based on triangulation from multiple sensors.
I've found that the distance is surprisingly accurate.
Further, the detector has recorded a strike at nearly 50 miles (recorded at the max distance of 25 miles).

My GSD detection system has proved terribly inefficient, their limit appears to be 7 miles.
Perhaps I need to get the vet to tune their antenna :lol:

I have posted that I now use weewx to log and graph "signal reliability".
Further I've noticed a strange behaviour.

The WH57, WH32, and WH31/WN30 sensors all share the same body, and presumably the same transmission module, but maybe not the same aerial.

2 of my WH31 are located in my 2 greenhouses, 1 of these sensors is at the furthest reach of my property.
They also get cold at night. They only ever drop to the equivalent of 3 bars on the signal graphic.
 
My WH57 and WH32EP have proved more of a problem despite being much closer to my gateway
My WH57 is located in my conservatory approx 12 feet from the back wall of the house (my only false strikes were my mobile phone and my laptop).
I found that both of these sensors lose signal during the night when the temperature drops to about 10C/50F.
They both have fresh energiser lithiums.
The WH57 was effectively offline for several hours.
In each case, rotating the sensor body around its vertical axis, such that the left hand side of the body (viewed from the front) is facing the gateway, has improved the issue. Both sensors still drop to the equivalent of 2 bars.
For reference, all my soil moisture sensors have the coiled wire fix (and behave themselves), my WS80 rarely dips and my WH40 occasionally dips to 3 bars. Both of these are also located about 80 feet from the gateway.

This post comes with no guarantees, but if like Aircub, you have not recorded strikes, it might be worth trying a slight relocation and/or re-orientation.

87
Weather Website PHP/AJAX scripting / Re: wxStory 3.0
« Last post by jmcmurry on June 29, 2022, 05:52:45 AM »
Bill,

I'm running the script on two different servers and the images are 0644 on both.  The images folder itself is set 0755, maybe you can check that?

Please post the url of the file that is including wxStory_inc.php, or upload weather-story-test.php So I can test from here.

- Jim
89
In my case the time is not consistent. I am sure there is a reasonable explanation but so far it eludes me.

Maybe a pump that is activated when a tank is empty or similar reason, an elevator, a washing machine....
90
The point of this story is that just because engineers in China think 500KHz is a great frequency to use doesn't mean that it will be successful in all areas.
Inside there is a AS3935 Franklin Lightning Sensor that is made by AMS http://www.ams.com/ that is located in Austria.
Many others lightning sensors use this chip.
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