[Done] Photocell (LDR) library for Arduino (optimized for GL55xx series) - GitHub - QuentinCG/Arduino-Light-Dependent-Resistor-Library: [Done] Photocell ... ... <看更多>

The LDR is not very stable, as has been commented. What does happen over time is that the dark resistance decreases. UV from the sun may be a factor here. ... <看更多>