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Good enough for the girls I go out with? Could you loan me some tap water?Nice 'ible, I may have to adapt the design to my sense of decor and try this out myself!
Your buzzing sound was your floating ground. Get a GFI (Ground Fault Interrupter) and drop it in, problem solved. It basically just isolates your audio output from your noisy ground plane a little better. Alternately, you can go back in and decouple your ground plane better in your circuits, same difference.
Expect it to run from 0$ to 200$ or more, depending on what parts you already have. Sorry I can't give a better number, but some folks have easier access to parts. 200$ would get a very nice setup, from nothing.
My "Hello Kitty" BATTLE rifle, PLZ. Also, the luscious rich pink color fills my enemies with confusion and love while I fill them with high velocity lead fragments. Full win across the board.
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Nice work, I've been thinking about turning a large pile of excess 18650s I have into new guts for an old powerbank. Nice to see it already done. I'm going to use an aluminum project enclosure (and very careful isolation/shielding) to make mine a little more robust.Thanks, good 'ible!
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