Better answering the question then him thinking he's being ignored, causing him to bump/spam this issue?
I suppose, but its kinda like walking into a library and asking the librarian where the books on how to read are. This is the 21st century; google exists. -boggle-
Also, the actual position of the sun, doesn't always equate to the highest amount of solar activity, cloud cover etc sensing where it is brightest would be better, otherwise you're defeating its purpose.
Very true. Which is why tracking using data of sun position probably wouldn't be optimum.
Tubs and shields are not needed in the hackaday project I linked, I think such things would over-complicate the problem.
In the hack-a-day project, they are using three sensors - one perpendicular to the plane of the solar panels, and one each, left and right, -angled- away from the central sensor. The angles essentially form the "shadow sheild" - but their system is the one that is overly complex.
You can do it with two sensors - both of which point perpendicular to the plane of the solar panels - with either a shadow sheild between, or a couple of small tubes (a couple of chopped pieces of a ball-point pen would work fine). They need to be long enough so that when tilted, one sensor would receive more light and the other less, and you would move in the direction of the one with less light, until both are "equal" (that whole dead-band thing).
Thinking about it, you probably would only need two sensors if you can accurately place them at the front of the device, minus one value from the other, a positive number move to the left, and a negative number move to the right, zero don't move.
Yes, this is what I am saying, but since light from the sun (which, for all intents and purposes, is a point source of light, but is somewhat diffused through the atmosphere - plus there are reflections and such) is "everywhere", you can't just mount the sensors perpendicular and hope that they would work (I suppose you could angle them outward, like the project did - but there would still be the reflections issue) - you need the tubes or a sheild, and place them close together (right next to each other) - for this to work right.
Believe me, this is how it is done; look up how solar trackers are built and have been built in the past by experimentors and such - there is a huge wealth of information on the internet about them. Here you can find several, for instance:
One of them uses nothing more complex than relays and CdS cells (LDRs)!
I'd imagine you'd be using move power to run it than you'd be generating from the panels, not sure.
Depends on the panels and the power system being charged.