Arduino USB cover

This USB cover will avoid accidental connections between a shield and an Arduino's USB port, if the shield wasn't designed to avoid the USB port.

If you prototype your own shields for Arduinos, and if you're like me, you probably keep forgetting to keep your shield away from the big USB-B port that standard Arduino UNOs have. Rather than fabricate a whole new shield (if you only need one), this quick, small print will patch up the problem.