This is Bart....a wirelessly controlled, autonomous obstacle detecting robot !

The following are the robot's features :-

1.He's wirelessly controlled using 433MHz Tx/Rx modules.
2.He has the capability to sense an object in front of him and override the controllers command until the object i detected.
3.Has a piezo buzzer to tell you when there is an obstacle in front and also for a start up beep.
4.Two LED headlights for navigation in the dark.
5.A 5 LED Larrson scanner running on an ATTiny 85....because why not? :p
6.Controlled by a single joystick remote with push-buttons for added functions.

More information,code and build instructions on the instructables page : http://www.instructables.com/id/The-WirelessObstacle-DetectingBeeping-Robot-using-/

Also LMR page here : http://letsmakerobots.com/node/40002