Samsung is expanding its RGB LED TV line to a full range of screen sizes, from 115 inches down to 55 inches, making it a more realistic option for everyday homes.
Explore how a basic LED can be used as a tiny solar cell, generating measurable voltage under sunlight. This hands-on ...
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VU meter DIY kit with LEDs | LM3915N-1 LED driver
This time I bring an electronic kit for beginners, this is a very cheap and interesting device that displays audio levels ...
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