Hi all, I was talking a look at my arduino uno, and it seems that there are in fact two atmel chips on the board? There is the large chip, which I assume is the main microcontroller, but there is also a small, surface-mount chip (mega 18U2 I think). What does this second chip do?? Does it contribut…

Arduino UNO microcontroller type?

system June 4, 2012, 4:49pm 3

Ah, that's what I had suspected... thanks!

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