USB stack for Atmel AVR
http://www.obdev.at/products/avrusb/index.html
plein de matos electronique
http://stores.ebay.fr/perplexxer-shop
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http://users.pandora.be/educypedia/electronics/analog.htm
Lot of free Electronic circuit
http://www.redcircuits.com/Hobby.htm
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http://chronotronix.com/sites/nixie/nixie-tubes.htm
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http://www.embedtronics.com/nokia/fbus.html
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http://www.madhacker.org/rs232.htm
simple dim for nixie
http://www.mcamafia.de/nixie/ncp_en/nix_dim.htm
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http://www3.sympatico.ca/surfin.dude/creative/clocks/propclk/blick.html