Irida: A real-time Wireless Sensor Network visualization feedback   protocol
  In this paper, we describe the implementation of a real time visualization and feedback system for Wireless Sensor Network algorithms. The system is based on a fixed hardware testbed, which is deployed on a vertical flat surface and a feedback loop system that takes information about the current state of the network and projects this state, in a visual way, on the surface itself using a video projector. The protocol used is open and simple to use, and can be easily adapted for different hardware configurations. We call our system Irida. 
Marios Karagiannis, Laetitia Dallinge, Jose Rolim
cs.NI