Light Data

[ob2s]

Google failed me, maybe because the measure of light at any given minute is not something that is published anywhere ? I am just looking for some internet weather data source that provides a lumens number for the amount of light that the station (in my vicinity) measures in near real time or every 5-10 minutes. Obviously it will have a constant reading once the sun sets... any ideas before I have to build my own ?

Thanks

 

[FPizz]

22 hours ago, ob2s said:

Google failed me, maybe because the measure of light at any given minute is not something that is published anywhere ? I am just looking for some internet weather data source that provides a lumens number for the amount of light that the station (in my vicinity) measures in near real time or every 5-10 minutes. Obviously it will have a constant reading once the sun sets... any ideas before I have to build my own ?

Thanks

 

Maybe weather stations on WU have that data?  My weather station provides a solar radiation reading in real time.  Also, maybe a solar company can help you out.  I have panels on my house and it records how many kWh produced, but only does a daily reading. 

[ob2s]

Thanks, I found a regional hourly measure. It is a solar radiation measure. If it was every 10 mins it would be perfect for me as I am mapping that value to an angle value of a servo motor connected to a light dimmer. This dimmable 'daylight' spot light shines on the 'outside' of a faux window in a room in the basement. With a nearly transparent blind, the light in that window will match the outside light. If it isn't clear what I am doing, it isn't important. 

I can get the data in XML  

<station id="EGKO3" name="EAGLE CREEK" elev="740" lat="45.367942" lon="-122.330972" provider="RAWS">
<ob time="21 Jun 2:13 pm" utime="1561151580">
<variable var='T' description='Temp' unit='F' value='63'/>
<variable var='TD' description='Dewp' unit='F' value='46'/>
<variable var='RH' description='Relh' unit='%' value='54'/>
<variable var='DD' description='Direction' unit='deg' value='238'/>
<variable var='DDCARD' description='Wind Card' unit='direction' value='WSW'/>
<variable var='FF' description='Wind' unit='mph' value='5'/>
<variable var='FFGUST' description='Gust' unit='mph' value='9'/>
<variable var='FUELT' description='Fuel Temp' unit='F' value='68'/>
<variable var='FUELM' description='Fuel Moist' unit='%' value='11'/>
<variable var='SOLRAD' description='Solar Radiation' unit='watt/(m**2)' value='388'/>
<variable var='' description='Acc Precip' unit='inches' value='4.45'/>
<variable var='STAQUAL' description='Station Quality' unit='' value='OK'/>
</ob>
Thanks again.