Getting started with Arduino and WIZ820io
To get started an Arduino Duemilanove board is used with an Arduino prototyping shield and prototyping jump wires.
To get the 3.3V for the WIZ820io power supply an voltage regulator is needed to transform the 5V from the Arduino board to 3.3V.
(The maximum current draw from FTDI chip on the Arduino Duemilanove is max. 50mA and therefore not usable to power the WIZ820io)