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Whoa! Steve Marple has created Calunium, an Arduino clone built around the ATMega644/1284 chip. In addition to the larger memory and I/O that the ’1284 provides, he’s also integrated a DS1307 real-time clock and coin cell on-board, and broken out the footprint for an LM61 temp sensor. This is a really interesting project, and a nice looking one, too!
You can check out more details at his blog, including posts about building your own Calunium with strip board and the differences between the Calunium and Arduino.
Calunium is Open Source Hardware, and you can get the board and schematic files over on GitHub.
Very nice work, Steve!
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NICE! I was thinking of designing an Arduino board using the ATMega1284P (though maybe the TQFP package so it would be easier to fit in the Arduino footprint). I didn’t quite know how to extend the number of pins and was thinking more of a mega board cut down a bit. His idea of extra pins to the right of the existing ones looks good, but would only be compatible with standard shields. I might have mapped the pins a bit differently, though he does keep the same functions on the same pins (why is port C laid out “backwards”).
Comment by K Scharf — November 14, 2011 @ 2:19 pm