[electron_plumber] made an LED that can be blown out like a candle, and amazingly it requires no added sensors. The project uses an Arduino to demonstrate turning a tiny LED on and off in ...

This powerful audio-visual alert device is realized using the renowned Arduino platform. The 9V battery powered circuit produces a loud, wailing sound as a warning signal. As well, one red-colored LED ...

Some work by sensing sound ... use multiple sensors and outputs to trigger different effects depending on your needs. The Arduino is capable of driving small loads like an LED without extra ...

Lucía Garbo has created an Arduino powered ... include a SparkFun Sound Detector and small LCD display to provide details on recorded dB as well as an LED strip on top which changes colour ...

They’re using a cheap sound sensor module and an Arduino to catch instantaneous photographs, with students caught in the act of popping balloons. The goal here was to keep things as simple as ...