[loriz71]

By the photos and specs they seems exactly like the ones I use on my sensor!

You are risking to have a reasonable solar sensor, spending only a few £ I like when people do home work and share it, so lets go...



For now, forget the greyed part of this circuit. The OP used is an AD822ANZ. Try to get an original IC from Analog Devices, avoid cheap chinese ones labeled only by AD822 (I had bad results with them).

OP output must not exceed 1.1Volt.
One more time, refer to published document about this matter, it's all there.

And for everybody... don't expect that I make calculations for you. I just can't do it.

"Give a man a fish and you feed him for a day; teach a man to fish and you feed him for a lifetime"

Hi at all
I've made my solar sensor with my photodiode. I've used the schematics from Werk_AG with a R1 variable resistor (100 ohm is ok for my hardware) and a AD822 op amp. Work fine (I'm waiting for a sunny day in spring because in winter the sensor have some shade problem in the afternoon for a good calibration).
This is my wheater station data link.
http://italian.wunderground.com/personal...IFRIULIV40