We’re very happy to announce an updated version of the Arduino Ethernet shield, with some nice new features. This revision incorporates a micro-SD card slot so you can store files to send over the network. It’s compatible with the Arduino Mega (using the SPI pins on the ICSP header). It adds a reset controller which should address the problems some people have had getting it to work directly on power-up. All-in-all, we think it’s a well-rounded upgrade to a useful product.

Full software support for these new features is under development. The shield works with the Ethernet library in Arduino 0018 on the Duemilanove. Mega support and a standalone SPI library are coming in Arduino 0019, which should be out later this week. The SD card can be read with existing libraries, e.g. beta-lib. We’re working on creating a version with a proper “Arduino” feel and documentation.