Wouter Walmink, Alan Chatham and Floyd Mueller from the Exertion Games Lab at RMIT University in Melbourne, Australia, are developing an innovative helmet design called LumaHelm. They are aiming to turn the traditional helmet into an interactive display for communication, expression, and safety, in a number of activities such as cycling and skateboarding.
LumaHelm features strips made up of 104 LEDs, which are positioned so they cover the surface evenly in light. The strips are linked together and hooked up to an Arduino Uno so the lights can be controlled individually. The team also made an interface in Processing that can talk to the Arduino so anything drawn on the screen can be mapped and displayed on the helmet. An in-built accelerometer measures motion, allowing the user to control the helmet through head movement, which generates different light signals. You can see a demo and explanation of LumaHelm in the videos below: