How to setup a Node.js and Arduino development environment under Ubuntu Server 12.04

Some nights ago I’ve decided to start learning something about a nice project started by Ryan Lienhart Dahl aiming to run javascript code serverside:
its name is Node.js and it’s designed for writing highly scalable Internet application using event-driven asynchronous IO.

My final goal is to have a central server commanding one or more Arduino to have my home automated as much as possible.

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