Design and construct a mechanical arm that can reach from a platform on the floor("a rover") to a round door knob, turn the knob, and push open the door.

The action should take less than 30 seconds.

The rover will be need to be constructed, from directions to be posted on the EN900-3B website.

It will have 2 12v batteries in series, and be able to supply 24v, 12v, 5v and 3.3v as regulated voltages.

Drawings should be supplied for posting to this spec page.