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what is the difference between an arduino duemilanove and an arduino uno (or arduino zero or sparkfun redboard)? I know that the arduino duemilanove is no longer sold, but what model that is currently sold is the most similar to it (and does all the same functions)?

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The main difference between a duemilanove and a UNO is the serial converter. Otherwise..they have the same microcontroller (the Atmega 328p, unless you have a duemilanove with a 168), same IOs, same... everything.

If you worked with a duemilanove you can change to UNO and you just have to update the drivers. Old programs will work on the new one without any edit

frarugi87
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