To wire the motion sensor light, first identify the hot (black), neutral (white) and ground (bare or green) wires in the circuit wire and in the fixture. Twist the hot wires together clockwise ...

this DIY motion trigger for a DSLR is a quick and easy build, and probably loads more fun. The BOM on [Jeremy S Cook]’s build is extremely short – just a PIR sensor and an optoisolator ...

Motion sensor switches enhance energy efficiency in green buildings by reducing unnecessary lighting usage, improving comfort ...