Hey Bear, Starty and Stringer! Shazzy, I'm the one in the middle of the second photo!
Bear, those are the same. Just that we made a program for the robot so that it can move around the room without bumping into obstacles put in front of it. It uses its 'eyes' which emit ultrasound, and can thus determine distances. The claws prevented it from making sharp turns, and so had to be removed.
Yup, Starty, the initial idea was to create robots so that they can be used in he lives of people and do chores, keep a watch on the house, do some simple things such as to bring a glass of water, the papers, etc.