Most ambient lights and sensors are designed to generate ... light bleed from the back of an LCD display. This Arduino-powered Shiftbrite LED ambilight setup takes things a step further by ...

Pictured above is the sensor portion of what [Frapedia] calls his visual rain sensor ... small an needs to be replaced with a much larger LED meter.

This is a simple arduino project for a soil moisture sensor that will light up a LED at a certain moisture level. It uses Arduino Duemilanove microcontroller board. Two wires placed in the soil pot ...