What are the common types of light sensors used with the computers?
Common light sensors include photodiodes and photoresistors. A photodiode is a device that generates electricity when exposed to light. A photoresistor changes the amount it restricts the flow of electricity according to how much light falls on it. Both photodiodes and photoresistors “see” wavelengths of light outside of photosynthetically active radiation (PAR), but can be filtered to limit the angle at which light strikes them, and it may be desirable to choose a type with a diffuser (“cosine corrector”) for best accuracy early and late in the day.
