I have built myself a solarsensor in a jar, just as a testproject. And it is working better than I expected.
This was really fun, I can see in the grafs when there has been a cloud in the way for the sun. Together with the UV-sensor this is really fun to monitor.
It took a wile to adjust it in WD, but now it works like a clock.
After I took the pictures I have drilled two more holes in the bottom, just to get a better airflow.
It may not look very good, but it works great.
It would be interesting to have a look at someone else picture of their solar setup.
Andy