Researchers have developed a battery-free sensor that reacts to sound waves, such as particular spoken words, producing enough vibrational energy to power an electronic device. The novel sensor would ...
Recently, [Solder Hub] put together a brief video that demonstrates the basics of a Hall Effect sensor — in this case, one salvaged from an old CPU fan. Two LEDs, a 100 ohm resistor, and a 3.7 volt ...
The difference between Hall-effect sensors and Hall elements. Why Hall-effect sensors provide more than on and off information. How Hall-effect sensors can detect magnetic fields from an extended ...
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