C0ldwater is a simple messaging system built and optimized for the arduino platform. Anyway, apart from the main device which consists of a 4x20 lcd, a ps/2 keyboard, an arduino board and an ethernet shield, I have also developed a "PC friendly" version of the server with the related win and linux clients, as well as a web interface for accessing the accounts. Most of the material is shown in my project home page, but I will try to post anything here in order to show you what it is all about. I am currently planing some other updates for this service, so stay tuned for more!
It might be interesting for some of the "wanna be users" who lack a 4x20 display, that a message reader has been developed some weeks ago. The code is on the project's home page (see the link on the left) and it consists of the same core (arduino board + ethernet shield), but doesn't need a ps/2 keyboard and only uses a 2x16 LCD display. It can be controlled via 2 switches to check for new messages and display them. Testing it with the on-line web interface (on www.c0ldwater.com) is very simple: just send a message to the user "c0ldwater" (a test program) and wait for the same message to be sent back!