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 ...

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’re a long-time Hackaday reader like we are, you’ll certainly remember a rash of projects from around ten years ago that all (mis-)used an LED as a light sensor. The idea wasn’t new ...

This is a simple arduino project for a soil moisture sensor that will light up a LED at a certain moisture level ... the resistance value and then pour water and measure it again. Use a mid value for ...

The Pressure Sensor Module incorporates ... This is a great building block for a future project using the Velostat or the RGB LED. It will also prepare the user on how to successfully hook the ...

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 ...