The Nanode is a web enabled Arduino clone kit. It is available for $22.75 here.
If you have one, and are thinking “OK, I’ve bought the kit. Now what?” go to the Use It page for step-by-step instructions.
About the Nanode
Often, we need to get sensor information up onto the web, or control something from the web. The simplest way to do this is to install a simple microcontroller with web access. This is what the Nanode is. It works especially well with services like Pachube.
Basic environmental monitoring with Nanode and Pachube.
Wicked Device Blog Post: Nanode + WickedNode + DHCP + DNS + Pachube! (source code)
Wicked Device Blog Post: Nanode + Analog Inputs + DHCP + DNS + Pachube! (source code)
Wicked Device Blog Post: Debugging Network Problems
Ian Chilton’s nicely organized Nanode Information Page