Three years ago I bought a mail notifier from Dealextreme. This USB device is only equipped with and RGB LED and is implementing HID protocol and so do not need any drivers to control.When received I wanted to only poll my Gmail account each x minutes and according to the colors display my unread email, that worked very nicely until I got a smartphone...
So I unplugged the mail notifier for a long time, in fact until now..
As I am trainning in python, I decided to make a kind of package to handle this device, by creating a library that could be used in your python scripts or as a stand alone binary