[laulau]

Hi,
I have a new Davis rain gauge connected to my WD.
It looks like i'm missing some rain tips comparing to my Oregon rain gauge and to my manual rain reading.
   
In blue the WeatherDuino measured rain and in red the Oregon rain measurement.
What should i check to solve that ?
Laurent

[JT118]

It seems it is consistent, so it is one or other of the gauges calibration, either the gauge itself or the TX software. A few things, Are you sure the Davis is metric and have you altered the TX software to reflect its calibration. ie 0.2 for a metric Davis Gauge or 0.254 for an imperial one. (not necessarily the Davis that is wrong, might be the Oregon over reading.)
TX config file as follows;

*/
#define COLLECTOR_TYPE 0.200 // Please note: Values must be in metric units. Max. resolution: 3 decimal digits
// -------------------------------

See here for further info on calibration:

http://www.meteocercal.info/forum/Thread...her?page=2

Hi,
I have a new Davis rain gauge connected to my WD.
It looks like i'm missing some rain tips comparing to my Oregon rain gauge and to my manual rain reading.

In blue the WeatherDuino measured rain and in red the Oregon rain measurement.
What should i check to solve that ?
Laurent

[werk_ag]

Also don't forget to adjust Cumulus multipliers according to your rain gauge.

Cumulus Rainfall settings
Adjust the Cumulus multiplier according to this formula:

Multiplier = Bucket Type / 0.2 (values in mm)

[laulau]

The raingauge is a metric, there is a sticker '0.2mm' inside.
TX config is ok to 0.200.
Cumulus multiplier is set to 1.
It's perhaps a hardware problem, bad connexion or poor welding i will check tha tomorrow.
can the 0.1µF capacitor be problematic ?

[JT118]

The raingauge is a metric, there is a sticker '0.2mm' inside.
TX config is ok to 0.200.
Cumulus multiplier is set to 1.
It's perhaps a hardware problem, bad connexion or poor welding i will check tha tomorrow.
can the 0.1µF capacitor be problematic ?

OK, all worth checking, but it just might be an over reading Oregon. You won't know until it is all calibrated as above. Assuming capacitor and soldering is OK, It might be worth checking calibration. The Davis is a better instrument than the Oregon.

[laulau]

The Davis is a better instrument than the Oregon.

That's why i've bought one.
But what you can't see on the graph i posted is that with real rain Oregon show some rain very quickly (perhaps not the good value) as WD detect that rain a while later.

[werk_ag]

But what you can't see on the graph i posted is that with real rain Oregon show some rain very quickly (perhaps not the good value) as WD detect that rain a while later.

I don't know how fast Oregon updates the rain data, the WeatherDuino Pro2 updates the rain value, every 31 seconds.

[laulau]

46s for the Oregon