J5t was inspired by Johnny Five (Short Circuit), and built using Lego and the Lego Mindstorms RCX, motors and sensors.

J5t is a tracked robot with castor style dolly wheels at the rear, originally the idea was to replicate Johnny Five from the film Short Circuit, but now J5t has evolved into something else.

J5t currently has the ability to change shape and fire guns. In this shape changing process, there are 16 hinged joints that work together to reposition the tracks, RCX, head arms and body... all powered by one motor closing one of the joints.

The control of the shape change positioning is provided by one light sensor, which also gives J5t the ability to 'go a bit more' and fire it's weapons.

Control is provided by a second RXC as a hand held controller.

The only non-lego parts I've used are some aluminium foil, sticky tape, double sided tape and a piece of paper with a grey scale printed on it. Everything else is pure and original Lego.

More info on my website http://www.stop4stuff.com/lego/technic/mindstorms/j5t/