This is a general purpose educational robot , This is basically designed for people who want their work done easily by just doing some coding with electronic development board , It provides motor mountings for many types of motors used in robotics(BO motor , DC motor ) , Along the circumference of the bot many holes are provided to hang/place any type of electronic board/ PCB like Sensors board , Motor driving module etc .
CAD model of Arduino Diecimila is taken from here :
Arduino Diecimila T8730