I have worked with the 8x8 Bi-Color LED Matrix grid. A simple explanation of the work can be found here Adafruit: Bicolor LED Square Pixel Matrix.
Me and a partner are working on implementing a remote webcam viewer that does not require installation of any software by the user to view a webcam through a web interface powered by node.js. Surprisingly there is currently very little relating to this available with regards to HTML5 and node.js. A link to our work is here: ECE497: Remote Web Cam Viewer Final Project