adwsystems:
I will need to detect Sun, Shade, and Dark.
If you just need that, try to connect a plain LED directly to an analog input, without anything else. 
LEDs are reversible, they generate up to 1,5V in plain sun, depending on model/color.
adwsystems:
I will need to detect Sun, Shade, and Dark.
If you just need that, try to connect a plain LED directly to an analog input, without anything else.
LEDs are reversible, they generate up to 1,5V in plain sun, depending on model/color.