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 ...

You can use an LED as a light source, sure, but did you know you can use one as a sensor? The concept of using an LED as a sensor is much like using a speaker as a microphone. Flip things around ...

He suspected EMF interference so as a quick first step he decided to throw together an EMF detector using an Arduino ... circuit from the emergency lights as the most likely culprit.

The microcontroller-based concept was chosen because I wanted to scale the sensor system later to suit other applications. Here is the diagram of my Arduino ... light and by detecting its reflection ...

Using motion detectors and an Arduino you can trigger lights, fans ... Check to see if the sensor is triggered; if it is, flash the on-board LED in front of digital pin 13. This is a good way ...

If you are designing your own intelligent “Graden Computer” with an optional digital plant moisture sensor ... lights an LED to alert the user when it is time to water a potted plant, and/or turn on a ...

Unveiled as the industry's first reflective color sensors ... light. With the LED drive current being as low as 250 µA (TRS1766 blue LED sensor), these devices are particularly well-suited for ...