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Welcome to the Bluetooth-LED-Sign wiki!

What is this thing?

This projected started out from a desire to have a way to communicate with people who were following so close behind me on the road, had their high beams on, or head lights off on the road. I don't exactly have road rage, but I've been known to break check people following too close, pull around behind people with their high beams on and high beam them, etc. I also had people constantly coming by my cube at work while I was working on something, or while I was on the phone with someone and just start talking to me. I needed a way to communicate things.

Over the last few months, I've been teaching myself Android/Java, Arduino, learning about micro-controllers, interfacing with things like blue-tooth, etc. I've learned a lot, and because others have helped me, I've decided to return the favor and share what I've learned and made with others.

DISCLAIMER

I'm pretty sure it's illegal in most states, if not countries, to have electronic messages in your vehicle, as it is considered a distraction to others. If you decide to try and use this project for the reason it was intended (and not as a message for your cube/wall/home/whatever) I can not and will not be held responsible for you getting a ticket, getting in an accident or getting shot/beat up by some other driver with road rage.

Credits

Although most of the schematics, custom android code, and message handling I did myself, I would not have a 100% working solution without the following people/sources.

Working old code for 3+ displays http://arduino.cc/forum/index.php/topic,50326.0.html
Large font (as well as help completing code to display large font on 3+ displays) courtesy of florinc and his wiseclock projects
Working library for arduino 0023/1.0 for 1-3 displays https://code.google.com/p/ht1632c/