whole idea is i wanna do with cheaper solution , I wanna use only rtc, linear actuator and arduino board for the project.
If i am using above component is it possible to it??
if yes how can i do it??
how can calculate sun elevation angle??
i don't have any sensor to locate and control the position.
michinyon:
It is totally possible to calculate the sun's position at any instant, as long as you know the time and your location.I don't understand your claim that the calculation cannot be made on an arduino.
You can follow the sun this way, without any light sensor at all, if you really wanted to. The obstacle
would be in having an accurate and persistently calibrated position actuator, which is not straightforward
to achieve.