This joule thief led or high efficiency LED with 1.5 volt driver is a tried and tested circuit built around some discrete electronics components. A common 5 mm high-efficiency white LED (D1) is the ...
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Ionic thermoelectric film uses body heat to power LED lights
A research team affiliated with UNIST has unveiled a novel thermoelectric (TE) film, capable of powering LED lights using a ...
In this article, we implement a rain and ice sensor by analyzing the reflection of an infrared (IR) light source. This project uses proven techniques based on multiple reflections of IR light in the ...
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