As found in the schematic of the ... comfortably see ambient light through the Fresnel lens. To be frank, using a microcontroller is probably overkill for most motion detector safety light circuits ...

Most ambient lights and sensors are designed to generate light to even out the picture ... He even provides the wiring diagram for his controller and the config file for his lights.

They’ve posted a demonstration using an Arduino that shows off what this sensor is capable of. The module includes four white LEDs which give a baseline of light to help normalize readings when ...