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The audio input just connects to a headphone plug ... 12 thoughts on “ Waterfall Signal Visualizer From Arduino And Cellphone LCD ” matt says: July 11, 2011 at 6:18 am ...
Waterfall Signal Visualizer From Arduino And Cellphone LCD July 11, 2011 by Mike Szczys 12 Comments [Leigh] is a HAM operator (you may know him as wa5znu).
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