Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...
We stock the shell, pinback, and clear Mylar cover required to create buttons. Up to 20 buttons may be made free, after which there is a charge of $0.25 per 1.5” button and $0.50 per 3” button.
Our hacker [Moritz Klein] shows us how to make a minimalist analog drum machine. If you want the gory details check out the ...
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