BlockyTalky is a low-cost, extensible, open source, programmable, networked toolkit for tangible creations.
To install the system, run './build' to install all dependencies. To start or restart the system, run 'sh start.sh' from the blockytalky directory. To connect to BlockyTalky, point your browser at 'hostname.local:5000/blockly' where 'hostname' is the hostname of your Raspberry Pi.
BlockyTalky: http://lpc.cs.tufts.edu/blockytalky/
Blockly: https://code.google.com/p/blockly/