Xiaomi has introduced the Smart Ceiling Light D20 on its global website, hinting at its availability for purchase in the coming weeks. It's clear that the light's standout feature is its integrated ...

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 ...

(Passive InfraRed sensor) A device used to detect motion by receiving infrared radiation. When a person walks past the sensor, it detects a rapid change of infrared energy and sends a signal.

Xiaomi has unveiled the Smart Ceiling Light D20 on its website, featuring a smart radar light sensor for automatic motion detection and a slim 6 cm design. Launch date, pricing and availability ...