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The vu meter its self is actually simply a bunch of light bulbs with a plug outlet to each and a driver circuit based on the LM3915 IC. We have some basic diagrams of the circuit design and pictures of the interface. But ultimately this can be easily interfaced with just about any microcontroller platform for any number of possible ideas you may have. [Source] Invent Geek
Wirespondence, Serial Bluetooth with a Micro, Analog Front End, AM/FM Receiver Restoration
Selected questions from past Q&A columns.
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