Screen recording : http://www.youtube.com/watch?v=zlMER-Y-fzY&feature=youtu.be
Uses Twitter, arduino and two LEDs.
The application reads all posts made by HarleyQuinn (a specific one on twitter) and displays them visually using Processing. Whenever a post is made that is either threatening such as “kill” or if she explicitely says “Batman” the brightness of the bat symbol increases as can be seen on the video.
The LEDs are strong enough to display the shadow of the bat symbol on a wall but it can’t be seen while teaching