It's like Christmas in July Arduino fans. The Italian open-source hardware platform just scored a number of new add-ons and a pair of fresh iterations that are sure to keep you tinkering and hacking for some time. First up is the Arduino Ethernet -- which, as you may have guessed -- sports an onboard Ethernet jack. You'll probably want to pick up a USB Serial Adapter to program the ATmega328 chip but, once you've loaded your code, it can be hooked up to the web without the need for a Ethernet shield -- and an optional PoE (Power over Ethernet) module means you'll only need one cable for all you net-connected projects. The