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snipacarina
Joined: 28 Jun 2007
Posts: 62
Location: Åland
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 Posted: Tue Feb 02, 2010 8:35 pm Post subject: Position of The Sun |
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Input:
- Your location coordinates, latitude/longitude.
- Time of interest.
Output:
- The actual position of The Sun, azimuth/altitude. |
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Ross_ValuSoft
Joined: 20 Nov 2005
Posts: 275
Location: Melbourne, Australia
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| Posted: Wed Feb 03, 2010 10:33 am Post subject: |
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Hello Benny (proves I opened your file  )
Thanks for this contribution.
You have in the code ...
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$regfile "M16def.dat" ' Atmel ATMEGA644V, 10PU used.
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So ... was it the Mega644 or the Mega16 ?
There are some people talking about solar "tracking" over on AVRFreaks. Do you mind if I quote you over there?
Hoping to try your code very soon on my tiny 10Watt panel. I have a 1000 watt fixed system on my house.
Cheers,
Ross |
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bzijlstra
Joined: 30 Dec 2004
Posts: 1179
Location: Tilburg - Netherlands
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| Posted: Wed Feb 03, 2010 11:58 am Post subject: Follow the sun.... |
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Very nice work, lots of calculations. Will give it a try.
Combine this with the QTH-locator and you know always were the sun is.
A QTH-locator can be found on my homepage (check the LCD_ARP-link)
Have fun
Ben Zijlstra |
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enniom
Joined: 20 Oct 2009
Posts: 537
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| Posted: Wed Feb 03, 2010 1:48 pm Post subject: |
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Thank-you for posting your excellent code.
Do you think it would be difficult to extend the calculations to include sunrise and sunset times - given a set of coordinates?
(Note: I believe sunrise/set is defined as when the sun is 0.75 degrees below the horizon.)
Ennio |
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snipacarina
Joined: 28 Jun 2007
Posts: 62
Location: Åland
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| Posted: Wed Feb 03, 2010 9:24 pm Post subject: |
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| Ross_ValuSoft wrote: | You have in the code ...
$regfile "M16def.dat" ' Atmel ATMEGA644V, 10PU used.
So ... was it the Mega644 or the Mega16 ?
There are some people talking about solar "tracking" over on AVRFreaks. Do you mind if I quote you over there?
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-I did try both M16 and M644
-Yes You can pass it over. |
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snipacarina
Joined: 28 Jun 2007
Posts: 62
Location: Åland
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| Posted: Wed Feb 03, 2010 9:34 pm Post subject: |
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| enniom wrote: | Thank-you for posting your excellent code.
Do you think it would be difficult to extend the calculations to include sunrise and sunset times - given a set of coordinates?
(Note: I believe sunrise/set is defined as when the sun is 0.75 degrees below the horizon.)
Ennio |
I did run this code as a part in a program for controlling water heating solar panel. I did run a realtime clock (RTC) with battery backup and used the time and date from RTC as input in the calculations for The Sun.
In the published DEMO i replaced the RTC with a fixed time/date set.
It would be possible to use a GPS to get both time/date AND position.
If You put in a small peace of code at the end, You can set a variable with Your own conditions (Altitude, time, humidity, Your moms birthday... ) |
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snipacarina
Joined: 28 Jun 2007
Posts: 62
Location: Åland
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| Posted: Wed Feb 03, 2010 9:44 pm Post subject: Re: Follow the sun.... |
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| bzijlstra wrote: | Very nice work, lots of calculations. Will give it a try.
Combine this with the QTH-locator and you know always were the sun is.
A QTH-locator can be found on my homepage (check the LCD_ARP-link)
Have fun
Ben Zijlstra |
Hi. Sorry but i did'nt find the QTH-locator.
Can You post a direct link? |
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bzijlstra
Joined: 30 Dec 2004
Posts: 1179
Location: Tilburg - Netherlands
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Ross_ValuSoft
Joined: 20 Nov 2005
Posts: 275
Location: Melbourne, Australia
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| Posted: Thu Feb 04, 2010 12:06 am Post subject: |
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Thanks Benny.
Best wishes,
Ross |
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snipacarina
Joined: 28 Jun 2007
Posts: 62
Location: Åland
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| Posted: Thu Feb 04, 2010 12:46 am Post subject: Re: QTH-locator |
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| bzijlstra wrote: | http://members.home.nl/bzijlstra/hardware/Display/display.htm
almost at the bottom....
Have fun
Ben Zijlstra |
OK. I found it!
Yes it could probably work nice.
Hint: In estimating the precision needed there is some simple calculations you could use. In one day, 24 h, the sun appears moving 360 degrees around the horizon. Then 360 / 24 = 15. That is 15 deg in one hour. 15/60 = 0.25 deg/min.
Thumb rule: The sun moves approximately 1 degree along your horizontal plane in 4 minute's . |
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Thansen
Joined: 12 Nov 2006
Posts: 9
Location: Silkeborg
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| Posted: Thu Feb 04, 2010 4:59 pm Post subject: |
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Hi Benny
Thank you very much for your code
Is there any chance you can post some more info about your solar project, i am thinking about making a project myself.
What kind of motors do you use?
/Thansen
_________________
/Thomas Hansen |
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bzijlstra
Joined: 30 Dec 2004
Posts: 1179
Location: Tilburg - Netherlands
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snipacarina
Joined: 28 Jun 2007
Posts: 62
Location: Åland
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| Posted: Sat Feb 06, 2010 1:17 pm Post subject: Re: Great project!! |
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In my are it is falling snow, leaf's blowing around and so on. I did not want to use a sensor sensible to those items. Therefore i prefferred to use a RTC protected in its box. |
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symphony
Joined: 08 Nov 2005
Posts: 49
Location: Sao Paulo - Brazil
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| Posted: Wed Feb 10, 2010 12:04 am Post subject: Re: Great project!! |
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Nice job ben´s.
Can you share the code?
_________________
Symphony Robotica Educacional
www.symphony.com.br |
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glena
Joined: 25 Jul 2007
Posts: 284
Location: PA near Philly
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| Posted: Wed Feb 10, 2010 2:15 pm Post subject: |
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snipacarina,
Excellent work. Thanks for the contribution!
-Glen
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