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

A selection of replacement round and acorn globes from LightBulbSurplus, the nation's largest globe supplier. Acorn Street Lamp Cover < ...

Barcelona expects to see its municipal power bill decline by a third just from the timed LED lights. Streetlights are low-hanging fruit, environmentally speaking. Their design tends to be clunky ...