This is a scrolling sign configured to instantly show when someone checks into a particular venue on foursquare. I made this to experiment with the foursquare push API but I'm still thinking up ideas for how else I can use checkins. I would love to hear your ideas and feedback!
The code for this project is very rough at this point and could use a lot of optimization. Arduino code: http://pastebin.com/zhqGDHn8 PHP code: http://pastebin.com/J1bndmx0 (you must put the PHP file on an SSL server and point the foursquare push API at it)
