tiny328
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Arduino clone is as small as an AA battery
What do you do if even the smallest Arduino boards (or their clones) are too big for your homebrew project? If you're Johan Kanflo, you find a way to make them even smaller. His AAduino project turns the already miniscule Tiny328 Arduino clone into an even smaller computing device that's about as big as an AA battery. Through creative wiring, it even fits inside a typical battery holder and draws power from the batteries in the remaining slots. He had to underclock the processor to extend to the battery life, but it's otherwise as capable as its normal counterparts.
