Cumulus Support

vagyver

Hello, i am tring to understand if my DIY wind sensor is ok concerning number of samples, times etc The wind direction sensor makes a measurement every 2 secs. When it gets 5 measurements (it will take 10 secs to complete) then it does a trigonometry calculation and makes the trigonometry average. D...

vagyver

I did not say I got these values very often. I said that this is the maximum that has been recorded in a few days in July 2013. In those days, even the official forecasts indicated maximum levels of 11. Are you sure that in Greece, maximum values for UV are 8,5-9. Perhaps in Setember, but what ab...

vagyver

After conversion, the maximum UVI I get is around 11 or 12. Are you sure that 11 or 12 is a correct measurent? It looks very large value to happen often. I live in Greece where the sun is pretty strong (of course in Portugal is strong too) and the maximum i got is UVI=8.5-9 while the temperature wa...

vagyver

Well,Werk i made some calculation about your UVI formula. When there is 10 UVI then sensor gives about 1083 mV, lets say 1.1V (according to the table i said at above post). According to your voltage reference, at 1.1V voltage the ADC will give 1023 bits. Now according to your UVI formula, a value of...

vagyver

I am very interested in your "acrylic cover transparent to UV rays" that you used. What is that? It seems like a outdoor light. What is it exactly? I am asking because right now i am looking for something to protect my UVM30A from weather but not make losses. I am very happy with my UVM30A...

vagyver

The sensor (and the general requirements for meteorology) should have a sine characteristic, i.e. the output is "100%" when the (sun) light strikes the surface of the sensor (or the Earth's surface) at 90 degrees, 50% at 30 degrees and 0% if parallel to the surface. Cheers, Alan. Thank yo...

vagyver

What i noticed is that if i place it vertically towards the sky and the sun in not at 12:00 then there is a small difference with placing with tilt directly towards the sun. So, i think it needs a cosine correction lens. Does anyone experience with this issue? And what i would like also to ask is i...

vagyver

guillemfreixanet wrote:The problem is that when I connect the sensor as it is explained in the datasheet, the output voltage is always 0 even in the brightest days.

What is your connection? Do you use a resistor? Diode polarity?

vagyver

I am also using the UVM-30 sensor as "Werk_AG" describes and my results seems accurate. I am also compare it with a ready made portable UV meter. And here in Greece in summer the sun is really strong, so my tests have large dynamic scales. So, i am really recommending it. (The usual known ...

vagyver

I am coming back to this issue and i would like to ask if there is a possibility or a perhaps future plan to: support a dummy weather station in which tha input data raw can be set by the user e.g by comma-delimited or whatever. In this case someone with a DIY weather station (like me) can connect t...

vagyver

Thank you very much for your reply (fast and helpful)!

I will do a research on this!

vagyver

So, you are not suggesting to use the 'easyweather.dat' method and instead, to emulate a known weather station. Please, could you please suggest me what weather station should i choose to emulate, so that it can be easy to do it? I mean, what ws has the easiest data protocol to emulate? And second q...

vagyver

I would like to ask if i can make Cumulus work with my custom made weather station. For your info, i can create any kind of data array (since i can program my microcontroller) at any serial data speed. So, is there the capability that Cumulus can accept data from a its own simple protocol, or i have...

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