[werk_ag]

Hi, thanks for the photos.
Looking at them, it seems that the PV cell is not completely facing the sky in an horizontal position. This is particularly important, and should be made as much as possible with a maximum of 1 degree error. A bull's eye level can help in this task. This adjustment is so important, that, and despite they don't use PV cells, every commercial pyranometer includes a bull's eye level.



More info about this subject along this thread:

http://www.meteocercal.info/forum/Thread...taic-Cells

Before trying anything else, please just try to place the PV cell horizontally. Let us know if doing this solves the problem, I'm sure that at least will dramatically improve the readings


If I correctly remember uncle bob was also tried to use the same WH1083 solar panel enclosure. Later he changed it's assembly to something like this:

The PV cell used is not the original that comes with this solar led device, but the one supplied with the solar / UV kit.