Dual axis solar tracker

Dear all.

I am trying to Dual axis tracker .I am planning to use analog wind speed sensor,GPS, Inclino meter (dual axis),RTC , and Arduino mega board for coding.

1)Can some one share me list of formula involved in dual axis tracker.
2)How backtracking can implemented Here .

So are you tracking wind or the sun? Either way the process is the same. four sensors means four different values.

TL ... TR ( top left/right)
BL ... BR ( bottom left/right)

What you can do is make an algorithm using IF/ELSE statements by taking the averages of the four sensors and then compare them.

Compare the left side average "avg(TL, BL)" to the right side average "avg(TR, BR)" to give you PAN, and then do the same for tilt, avg(TL, TR) and avg(BL, BR). Which ever average is bigger, is where the tracker moves.

unsigned int Avg(unsigned int A, unsigned int B)
{
return ( (A + B) / 2 );
}

Simple.

I tracking for sun , Not wind. We know that NREL gives us exact position of sun and azimuth angle w.r.t date and time. So Form azimuth how can implement sun elevation angle.If you plot graph for sun position You will get tracking from north to south . but tracking has to be done East to west. SO how can i convert it. How to add day light saving program.

http://www.nrel.gov/midc/solpos/spa.html

HazardsMind:
So are you tracking wind or the sun? Either way the process is the same. four sensors means four different values.

TL ... TR ( top left/right)
BL ... BR ( bottom left/right)

What you can do is make an algorithm using IF/ELSE statements by taking the averages of the four sensors and then compare them.

Compare the left side average "avg(TL, BL)" to the right side average "avg(TR, BR)" to give you PAN, and then do the same for tilt, avg(TL, TR) and avg(BL, BR). Which ever average is bigger, is where the tracker moves.

unsigned int Avg(unsigned int A, unsigned int B)
{
return ( (A + B) / 2 );
}

Simple.

I'm not into astrology, nor do I understand that website. Is this a school project or just for fun?

Hi, so you are aiming on tracking the sun without sensors, just algorithms and a clock?

[soapbox]Why not use sensors, you don't need a clock, don't need to know where you are on the earth, and don't need to play around with daylight savings. Although my curtains will still fade because of extra hour of sunlight [/soapbox]

(must recommend the [soapbox] [\soapbox] to forum mediators.)

Tom...... 8)

TomGeorge:
Hi, so you are aiming on tracking the sun without sensors, just algorithms and a clock?

[soapbox]Why not use sensors, you don't need a clock, don't need to know where you are on the earth, and don't need to play around with daylight savings. Although my curtains will still fade because of extra hour of sunlight [/soapbox]

(must recommend the [soapbox] [\soapbox] to forum mediators.)

Tom...... 8)

If you read above properly,
I am using RTC i.e DS1307 , INclinometer for the Feedback sensor . Determining actual postion

People figured this out 5000 years ago - using sensors.

You don't use a clock to follow the sun, you use the sun to calibrate the clock.

...R

@AMPS-N - Please stop posting the same question over and over again.Thread locked.