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LED VU Meter 101 
electro-tech-online.com | by bountyhunter | Fri, Aug 14
electro-tech-online.com is the #4 Blogger for LED lamp
Resistor RD affects the dot sweep rate: less resistance makes it sweep faster. This can be user adjusted based on preference. The LM3914 dot select pin is left open to select single LED (dot) mode, but in reality, about four or five LEDs are lit at any one time as the thing sweeps the display wit...
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