This is a very simple but useful project, strobe navigation lights for rc airplanes, or you can adjust the flashing time and make it a warning light for a forklift or even a turn signal light for a ...

The best e-bike helmets have commuter-friendly features and extra protection for higher-speed, higher-momentum crashes ...

If you cultivate an interest in building radios it’s likely that you’ll at some point make a simple receiver. Perhaps a ...

There’s a part you’ll find in almost every mains powered switch mode power supply that might at first appear to have only one application. An optocoupler sits between the low voltage ...

The numbers you see on the box don't always work out in real life. LED bulbs do last longer, but those claims about five to 10 years are estimates based on internal testing -- and companies are always ...

Follow me please class. We’re here at the optician’s to get a good look at a human eye and find out how it works. Human eyes are actually spheres. The part that we can see is only just the front. That ...

Abstract: This communication proposes a quasi-4-bit reconfigurable metasurface antenna (RMA) to realize continuous beam steering along with high aperture efficiency using a simple 1-bit bias circuit.

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