[danner]

I'm excited about correlating the data at the end of the year. Fun! Will be interesting to compare that to the SHT35.

[werk_ag]

When you get the SHT35, tell us how it works with the SHT31 library.

[danner]

Will do.

I am working on getting the wind/rain instruments and TX1 up and running. Hope to have that installed in the next week or so.

Quick question. Will the Davis 6450 Pyranometer work with the WeatherDuino?

[werk_ag]

Quick question. Will the Davis 6450 Pyranometer work with the WeatherDuino?

I'm not fully aware of the specs of the Davis 6450 Pyranometer, I think that without some adaptation on the output voltage, it will not work.
If you want, create a new topic regarding this matter, perhaps someone knows something more about the specs of the Davis Pyranometer.

[AllyCat]

Hi,

I don't have any "experience" with that sensor; the data sheet is easily available, but appears to give less detail than their UV sensor.  You may get a few more "clues" from that (6490) data sheet/manual, which seems to use a similar enclosure.

The supply voltage is specified as 3.0 +/- 10% so ideally you should adhere to that (but a nominal 3.3 v is probably"safe").  The output signal voltage is also up to 3 volts (1.67 mV/W/m2), about 3 times larger than the Nano reference voltage so you probably need a resistor divider of about 1/3 (e.g. 2k + 1k, but the sensor output impedance doesn't appear to be specified).  It's difficult to know if you should "modify" the standard Weatherduino Solar interface PCB, or build a simple, new "divider" interface directly between the 6450 and the "Transmitter" board.

The temperature sensitivity is specified as 0.12% per degree C, which may not be totally negligible.  It would/could be corrected in the software, assuming that the temperature is "known" (probably not the normal "external" temperature because it's sitting in the sunshine).  

Cheers,  Alan.

[danner]

Thanks. I think I'll stick to supported instruments.

[werk_ag]

..
The supply voltage is specified as 3.0 +/- 10% so ideally you should adhere to that (but a nominal 3.3 v is probably"safe").  The output signal voltage is also up to 3 volts (1.67 mV/W/m2), ...

Thank you Alan for the info.

Thanks. I think I'll stick to supported instruments.

Do you already have the Davis pyranometer? If yes, it could worth trying.
Otherwise you can opt for the Apogee SP-110: Self-Powered Pyranometer which is supported, or even try to build our solar cell based homemade pyranometer.

[danner]

No, I do not have the pyranometer. Am just planning for the future.

[danner]

Finally got the wind/rain up on the roof. Not sure whether the fiberglass pole is going to shake in the wind and give false rain readings yet, but we will see. I can move it over to the chimney if I have to and if that shakes then my house is gone anyway, LOL.

The FO wind instruments are ~5 feet higher than the peak of the roof so they should work ok there.

I'd also like to add a pyranometer, but that's way in the future. I am extremely happy with my setup now. Thank you to everyone involved with developing the WeatherDuino and thanks to all for helping with my questions.

[werk_ag]

Thank you for the picture and congratulations for having finished the project.

... Not sure whether the fiberglass pole is going to shake in the wind and give false rain readings yet, but we will see. 

An alternative position for the rain gauge, unless there are many trees around, will be installing it in the tower where you have the radiation shield (you can use the TX unit you have there). The rain gauge is the kind of instruments which when possible should be placed near the ground level, 1 to 2 meters above.