As it stands now, I have a wireless brake light and turn indicators on my helmet. http://m.youtube.com/index?&desktop_uri=%2F
Thats them at work. Right now its implemented with a single fio duino and two xbee radios. Any time the brake, right, or left signals fires you get an indication on the helmet to match. Fun stuff.
Now to the question: because I want to use less expensive hardware in version 2 of this design I need to figure out a different way of letting the controller in my helmet know that an input has changed state. Right now I'm making use of the xbee's ability to monitor pin states to let my fio know when the brake or turn signals are on. How do I do this with a radio without the xbees ability monitor pin state? (hoperf radio)
For the record, as it stands now, I have the fio and its xbee radio on the helmet and just the xbee and its power supply in the tail.
Ive entertained the idea of a low cost duino compatible controller in the tail that would convert the brake, right, and left signals into a serial stream that was xmitted over the hoperf radio. But what would that do to the battery life on the helmet side if it was always receiving data??