Dcled-state-tracker is a project mainly written in PHP, it's free.
tracks the state of a DC led display and loops the messages on the display
DCLED State Tracker
Author: Stefan Misch URL: https://github.com/misel228/dcled-state-tracker
Released under the GPL
DCLED stands for Dream Cheeky LED
It's a small LED matrix display that can be connected to your computer via USB.
Jeff Jahr wrote a program for Linux to send message to this display. His code can be found here and is actually necessary for this project: http://www.last-outpost.com/~malakai/dcled/
Follow the make instructions and copy the binary to /usr/local/bin or someplace else in your $PATH. Please note: libhid is not distributed with Debian or Ubuntu anymore so you need to install that separately as well. You can get it here: http://libhid.alioth.debian.org/ (As of September 2011 it still works with the version from SVN.)
The state tracker consists of two parts. One program acts as a demon and continously displays messages that it receives from a client script.
To use it just start "dcledd" and let it run (e.g. in a virtual terminal with "screen").
The send the messages with "dcledc