Or you can go back to basics and build this reflective RGB sensor from an LED and a photocell. The principle behind [TechMartian]’s approach is simplicity itself: shine different colored lights ...

LED lights are more energy-efficient and brighter than halogen bulbs, so keep this in mind too while you shop. There are various ways you can power outdoor motion sensor lights, including ...

This one uses LEDs as the light sensor and mosfets to drive the output to rotate on a single axis. He even reduced the duty cycle on the fets so no heatsink is needed. Mounting in a peanut butter ...

A youtuber has developed a lighting system for staircases using the ESP32 module, the RD D03E mmWave radar sensor, and the ...