Among the other hobbies I do is amateur astronomy so I'm quite aware that there is light from the sun before the sun comes up and after it goes down. How sensitive the sensor is to the small light levels is something I do not know yet, but hopefully will understand soon. Which lead me to another examination of what is behind the readings I am getting at night.
Something else I was looking at was whether the full moon could possibly trigger the sensor as it is quite bright and high in the sky. There is some correlation in the solar readings (the spec sheet says it's a type of photo-diode, which I was able to get output from by shining my flashlight on it) with the full moon rising and the higher in the sky the moon is the higher the readings above 1 W/m2 become. But I am also aware that correlation does not equal causation, that it could simply be a coincidence. I wont know if there is any correlation until the moon cycles and isn't out at night, or I could climb on my roof and put the black cloth on the sensor.
Something else I was looking at was whether the full moon could possibly trigger the sensor as it is quite bright and high in the sky. There is some correlation in the solar readings (the spec sheet says it's a type of photo-diode, which I was able to get output from by shining my flashlight on it) with the full moon rising and the higher in the sky the moon is the higher the readings above 1 W/m2 become. But I am also aware that correlation does not equal causation, that it could simply be a coincidence. I wont know if there is any correlation until the moon cycles and isn't out at night, or I could climb on my roof and put the black cloth on the sensor.