[hornychz]

... but I believe a thin water layer or even a few drops above the solar cell will have little impact on the readings. I never noticed a reduction in readings when it starts raining, perhaps because the readings are always a moving average of the last 2.5 minutes (in the case of WeatherDuino Pro2 system).

Yes, you're probably right. But here, it seems that the water layer may be several millimeters thick ...



My sensor, although it water drains immediately demoted me for about half the year so it certainly does not measure. When I'm able to climb onto the roof, take a picture and send images, it is really worth seeing! I have prepared material for several other sensors, but now I'm scared ...

Regards