After searching for an hour or so for a wall wart that was the right size and polarity, I remembered that I had a a Radio Shack wall wart that had different sized barrel plugs, now what if the Arduino had interchangeable barrel jacks.

Interchangeable Barrel Jack Adapter

CrossRoads July 16, 2011, 5:27pm 9

The 5V switching regulator wallwarts don't do that. They put out rock solid 5v.

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