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 ...

Amazon’s Big Spring Sale might not officially start until next Wednesday, but there are already some great warm-up deals on ...

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 ...