chipKIT® QuickIO
Designed with the chipKIT Lenny in mind, yet still able to work on any
Uno footprint board, the QuickIO shield is the perfect way to quickly
test something out. Providing 4 buttons, two potentiometers and 8 LEDs
you can quickly make a simple user interface for experimenting. No need
to mess around with wires and breadboards just to add a knob, or a
couple of buttons, or an LED or two. Just plug in this shield and away
you go.